The Weekly Transfusion

I wrote this note as a comment on my colleague Rick Kirschner's blog:

Hey Rick,

I thought long and hard on this, especially since I've spent a lot of time dealing with misrepresentations of my own work. On one hand there is the ever-present desire to turn the other cheek and convert my response into a teaching opportunity. This works in certain circumstances --often if the skeptic is actually curious about that which they are skeptical of.

Most are not.

In most other circumstances, turning the other cheek will often get that side of your head smacked as well. As Ho Chi Minh once said in reference to Mahatma Gandhi, "Had he grown up in Vietnam, he'd have ascended into heaven long before he did."

Because these people are often prisoners of their own zealotry their tactics are not very often of the velvet-glove variety. Since they don't respect that which they are skeptical of, and anything goes and every tactic is permissible

Of course this automatically brands them as pseudo-skeptics not skeptics, since true skeptics are more than happy to amend an existing opinion with the presentation of new evidence. Most of these guys just feel that modern allopathic medicine (and hence the public) is under attack from vicious, dangerous woo-merchants and it is their anointed job to exterminate this vermin.

Thus it is unlikely that appeals to reason will ever work effectively, since dialogue is not what they are interested in -- anymore than someone would ever be interested in dialoging with a cockroach before they stepped on it. People who dialogue with cockroaches usually don't step on them.

Like Ho, Adolf Hitler also had an opinion of Gandhi, remarking once to Lloyd George: 'Why doesn't someone just shoot him and be done with it?'

Let's call a spade a spade: The more extreme of these 'anti-SCAM' pseudo-skeptics will not rest until we're completely discredited and eliminated.

Thus their tactics and criticisms are almost always of the 'gotcha' variety. This is usually performed by trying very hard to cover their opponents in manure so that they can stand back, point to them and say 'look, they are covered in manure.'

Gerhard Uhlenbruck, the worlds leading lectin researcher, and one of the few scientists who has openly acknowledged the value of my work has a nice way of reflecting on the silliness of what these people do with their time:

"Never chase a lie. Let it alone, and it will run itself to death."

Stephen Jay Gould also had a nice way of turning the tables on pseudo-skeptics. This from 'The Structure of Evolutionary Thinking' (2002):

"If none of the foregoing charges can bear scrutiny, strategists of personal denigration still hold an old and conventional tactic in reserve: they can proclaim a despised theory both trivial and devoid of content. This charge is so distasteful to any intellectual that one might wonder why detractors don't try such a tactic more often, and right up front at the outset. But I think we can identify a solution: the "triviality caper" tends to backfire and to hoist a critic with his own petard -- for if the idea you hate is so trivial, then why bother to refute it with such intensity? Leave the idea strictly alone and it will surely go away all by itself. Why fulminate against tongue piercing, goldfish swallowing, skateboarding, or any other transient fad with no possible staying power?

So, if Uhlenbruck and Gould are correct, why do so many people spend some much time making life miserable for people with new ideas?

Probably because, although we talk of ideas, it all distills back down to power and money. New ideas often threaten the exact type of person who (personality-wise) would go on to make the perfect pseudo-skeptic. The type of person who buys into the existing power structure, hook, line and sinker. Anything that takes away from the reflected light ('My son the doctor.') they have spent so much time and money on gaining. For which they so sacrificed and assiduously played the game in order to secure. This is not just a threat -- it is also a nightmare.

So what is the answer?

Like any test of will (and for a myriad of reasons) victory goes to those with the ultimate staying power.

In military terminology there is a tactic called 'the refuse.'

Back in the old days, these guys would just line up opposite each other on some level field and go at it. Typically, since most people are right-handed, the right side of an army's line would often be stronger than the left. Thus the idea of any good commander would be to 'refuse' to fight (usually by slowly pulling back) on his left side while trying to press the advantage on his right.

This is a fundamental tactic in Aikido martial art. It is called 'entering,' the idea being to enter inside the physical space of the attacker and then by turning as you enter, you align your force with his and for a brief transcendental moment, see the world as he sees it. Very hard to have a fight with someone who is trying their hardest to see your point of view. It is very hard to hit something which has as its ultimate goal to be where you are not.

I stopped writing for pseudo-critics years ago: You can't please them, they won't buy your books anyway and the people I really want to help educate don't want to read that type of stuff.

I just refused to do it.

Now, while most magazine articles critical of my theories have long-ago been relegated to the landfill, you can still buy my first book only in hardcover despite being twelve years in print.

Why? Because the theory works in many people and they go on to tell other people.

Now, if I need to buy a new hammer I'd be somewhat interested in reviews that tell me which hammers 'not to buy,' but ultimately if my best friend tells my which brand of hammer he's happy with, I'm probably going to go with that advice. I would also find questionable reviewers who had nothing good to say about all hammers in general.

Let's commit to always doing the hard work. Let's accept the fact that we practice a revolutionary form of medicine and let's stop looking for approbation from the very people whose preeminence we threaten and who cannot appreciate the strides we've made and the struggles we've endured in order to put this profession back on its feet.

Let every patient see the value of what we can do. These pseudo-skeptics will always have their coffee claches; their little goldfish bowls, where naturopaths do nothing right and allopaths nothing wrong. But let's refuse to make it into something bigger than it really is, because that is not the main battlefield.

Instead, let's wake up every day determined to redouble our efforts to improve the lives of our patients.

I'll end this diatribe with two more Vietnam Era quotes, which to me seem oddly relevant since US health care is currently in a Vietnam-like quagmire.

The first is from Lyndon Johnson, a fundamentally un-quotable president. Johnson did once say something I thought was of note. In dealing with criticisms of his Great Society program, he was heard to say:

'It takes a master carpenter to build a good barn. Funny thing though, is that any fool with a match can then burn it down.'

Let's remember that we are master carpenters. The public can be trusted to see the benefit of good barns. Let's also refuse to put the matches in the hands of our opponents.

The second quote is from a meeting between a Vietnamese general and an American general in Hanoi several years after the war ended.

'You know' said the American general, 'you never beat us in a single battle.'

'Yes, that is true.' replied the Vietnamese general, 'however it is also irrelevant.'

Remember water always beats rock. That's because water can go around rock. Let's refuse to butt heads with rocks.

And as the quote goes "Medicine progresses funeral by funeral."

They were referring to the doctor's funeral, not the patient's.

Take care and good luck with the new book.

Peter

I'm just back from a site visit to the Dolce Conference Center, scene-to-be of the upcoming IFHI 2009 Conference and Certification. What a facility! If you've been to the Buttes for 2005 or 2007 prepared to get gob-smacked! The premises (a former monastery) are just gorgeous this time of year. The intimacy of the lecture halls combined with the terrific AV capabilities of the facility already have my mind running in overdrive. I think it was very smart to top the attendance at 125. This will insure that everyone feels that they are a real part of the event.

Unfortunately, despite the fact that the conference is three weeks away, I'm told that all available rooms at the Dolce Conference Center have been taken. We have a few seats still available for the day sessions, and if anyone plans to register from this point on, we can book them at the nearby Double Tree Inn and the Dolce will bus these folks back and forth.

Anyway, if you want to attend IFHI, even at this late point in the process, contact IFHI Conference Services and maybe they can work something out for you.

This Transfusion: Sword swallowers and sore throats | ABO in Neanderthals| Blood groups and endometriosis | Nutrigenomics and personalized diets | This News This Week

Welcome to The Weekly Transfusion, 1.6 for the week of April 26, 2009.

Sore throats more common in sword swallowers

Sword swallowers run a higher risk of injury when they are distracted or adding embellishments to their performance, but injured performers have a better prognosis than patients who suffer iatrogenic perforation....Major gastrointestinal bleeding sometimes occurs, and occasional chest pains tend to be treated without medical advice. Sword swallowers without healthcare coverage expose themselves to financial as well as physical risk.

Article Link

Comment:

I guess it is just that old 'occupational hazard' story, sort of like the study that discovered that woodpeckers don't seem to get headaches.

Genetic characterization of the ABO blood group in Neanderthals

The high polymorphism rate in the human ABO blood group gene seems to be related to susceptibility to different pathogens. It has been estimated that all genetic variation underlying the human ABO alleles appeared along the human lineage, after the divergence from the chimpanzee lineage. A paleogenetic analysis of the ABO blood group gene in Neandertals allows us to directly test for the presence of the ABO alleles in these extinct humans. We have analysed two male Neandertals that were retrieved under controlled conditions at the El Sidron site in Asturias (Spain) and that appeared to be almost free of modern human DNA contamination. We find a human specific diagnostic deletion for blood group O (O01 haplotype) in both Neandertal individuals. These results suggest that the genetic change responsible for the O blood group in humans predates the human and Neandertal divergence. A potential selective event associated with the emergence of the O allele may have therefore occurred after humans separated from their common ancestor with chimpanzees and before the human-Neandertal population divergence.

Article Link

Comment:

Certainly one of the major evolutionary advantages of being blood type O was their double-barreled antibodies; this blood type being the only one that reacts to both “A things” and “B things” in the environment. This probably provided an extra layer of protection against any number of epidemic diseases (plague, smallpox) and many endemic ones (flukes and parasites) as well. If this immune “hyper-vigilance” would go on to increase the rates of inflammation and auto-immune disease in their modern descendants, it should also be remembered that these are often diseases of later life, typically past child bearing and rearing age. Thus if it were a late-model alteration, it certainly provided a significant survival advantage. The Founder Effect can be seen in the characteristics and distribution of the genes for Rhesus Negative and O blood type among the early Mesolithic Period during the so called- ‘Happy Paleo’ period, which also shows some correlation with the ancestral haplogroups R1b and I. On the other hand blood type A seems to have conveyed a better chance of surviving the ‘lean’ period of the early Neolithic; a slightly different, perhaps better way to starve. Type A’s more tolerant immune system may have given them the benefit when it came widening the diet and exploring new foods.

ABO and Rh blood groups distribution in patients with endometriosis.

The blood group A was more predominant in women with endometriosis, while blood group O was less predominant. The overall risk of women with endometriosis and A blood group was 2.89 (95%CI, 1.85-4.52). No significant difference was detected in ABO and Rh blood groups in women with endometriosis according to the severity of disease. CONCLUSION: Women with endometriosis have a 2.9-fold increased risk in the A blood group distribution. The role of blood groups in the development of endometriosis remains to be determined.

Article Link

Comment:
I verified the observation back in 1988, when we were observing whether increases in opposing blood group antibodies were associated with any reproductive illnesses. We observed that in our small endometriosis group, all women were type A, and all virtually had elevated antibodies to foreign blood types (in their case, blood type B ). It did seem at he time to be an area ripe for future research, but I never got back to it. It is nice to see that others have observed the same tendencies.

The antibodies in the ABO system (isoagglutinins) called anti-A and anti-B are not normally present at birth. The antibodies develop between 3-6 months of age due to the stimulation of the newborn’s immune system by microbes and foods that possess antigens of an opposing blood type. In, for example, type O children, they will begin forming to type A and B red cell antigens as soon as the child starts eating food, because the A and B antigens are actually found in quite a number of plants. So, as soon as the child starts eating plant food, she'll be exposed to those antigens and start making antibodies against them.

Nutrigenomics and Personalized Diet: From Molecule to Intervention and Nutri-ethics

The relationships between food, nutrition science, and health outcomes have been intensively analyzed over the past century. Genomic variation among individuals and populations is a new factor that enriches and challenges our understanding of these complex relationships. Hence, the rapidly emerging intersection of nutritional science and genomics - nutrigenomics - was the focus of a special issue of OMICS: A Journal of Integrative Biology in December 2008 (Part 1). The OMICS Nutrigenomics Special Issue (Part 2) February 2009 is The relationships between food, nutrition science, and health outcomes have been intensively analyzed over the past century. Genomic variation among individuals and populations is a new factor that enriches and challenges our understanding of these complex relationships. Hence, the rapidly emerging intersection of nutritional science and genomics - nutrigenomics - was the focus of a special issue of OMICS: A Journal of Integrative Biology in December 2008 (Part 1). The OMICS Nutrigenomics Special Issue (Part 2) February 2009 is now available free online

Article Link

Comment:
Two entire issues on personalized nutrition with virtually no mention of any of the bio-markers that really determine individualized dietary functionality: ABO blood groups and secretor status. Maybe these bio-markers are just too low-tech for the average scientist. More likely, the nay-sayers behind the smear campaign I've had to endure over the last ten years have had their desired effects.

No matter, if you read enough history you soon realize that Billy Shakespeare had it right: 'Truth will out.'

News of the Week

• April 28 2009: Dr. Peter D'Adamo - Lecture at Backus Hospitalthe basics of 'Eating Right For Your Type.' Open to the general public. More information
• June 5-7 2009: Personalized Medicine in Form and Function. A weekend intensive seminar with naturopathic physician, scientist and author, Dr. Peter J. D'Adamo in Norwalk, CT. This seminar provides training in personalized nutrition determination using blood grouping, secretor status, epigenetic indicators, dermatoglyphics and biometrics. Extensive overview of the latest clinical and laboratory techniques, information systems and pharmacology. Certification will also be offered. Presented by the Institute for Human Individuality. CME's may be available. More information. SEATING IS EXTREMELY LIMITED. RESERVE YOUR SEATS NOW!

Until next time.

This Transfusion: Parachutes and death from gravitational challenge | Hawthorn and heart disease | Blood group A and ovarian hyperstimulation syndrome | Rh blood group and hearing loss | Epigenetics, diet and super oxide dismutase (SOD)

Welcome to The Weekly Transfusion, 1.5 for the week of April 13, 2009.

Insufficient evidence for parachute use to prevent death and major trauma related to gravitational challenge

As with many interventions intended to prevent ill health, the effectiveness of parachutes has not been subjected to rigorous evaluation by using randomised controlled trials. Advocates of evidence based medicine have criticised the adoption of interventions evaluated by using only observational data. We think that everyone might benefit if the most radical protagonists of evidence based medicine organised and participated in a double blind, randomised, placebo controlled, crossover trial of the parachute.

Article Link

Comment:

Evidence based medicine is the buzz-phrase of the moment, the idea being that you scour the medical literature on a particular association,for example using the herb Hawthorn to treat chronic heart failure. You set the selection criteria, such as the type of study (placebo controlled, etc.) and the amalgamate the data. Evidence Basis has some very important advantages, namely that it gives the most accurate current assessment of a treatment or strategy since you are pooling all the available data.

One problem with evidence based medicine is the simple reality that evidence and benefit are not always the same thing. As shown by this slightly tongue in cheek study, there is still an insufficient evidence basis to conclude that parachutes are effective in preventing major trauma related to gravitational challenge. The researchers failed to find suitable studies showing the effects of using a parachute during free fall, despite setting logical criteria (death or major trauma, defined as an injury severity score > 15) and scouring he available literature.

Setting artificial standards can also impeded the workings of common sense: Edward Murphy put it best in his classic The Logic of Medicine: 'Only a fool would require a double-blind study to see if it was raining outside.'

Lack of evidence is not evidence of lack.

Evidence based medicine has potential to revolutionize day to day health care. However I think an even bigger revolution lurks under the surface: The reinterpretation and reorganization of medical facts derived under the older 'disease-care paradigm' by evolving paradigms that better fit new real-world circumstances.

A common argument against the need for heterodoxy in medicine is that 'when facts are proven, they stop being alternative.' This may well be true, but it neglects that facts themselves are forever open to reevaluation, deconstruction and recycling. Much of my work with the ABO polymorphisms was the simple reappraisal and restructuring of the conventional biomedical literature on the subject --but done with an eye to its ulterior benefits in naturopathic circumstances. Had they not been subjected to the 'naturopathic lens' these facts may well still be floating in their own splendid isolation.

Hawthorn extract for treating chronic heart failure

For the physiologic outcome of maximal workload, treatment with hawthorn extract was more beneficial than placebo... Exercise tolerance were significantly increased by hawthorn extract... The pressure-heart rate product, an index of cardiac oxygen consumption, also showed a beneficial decrease with hawthorn treatment... Symptoms such as shortness of breath and fatigue improved significantly with hawthorn treatment as compared with placebo...These results suggest that there is a significant benefit in symptom control and physiologic outcomes from hawthorn extract as an adjunctive treatment for chronic heart failure.

Article Link

Comment:
I first wrote about Hawthorn (Crataegus spp.) in my book Eat Right For Your Type over thirteen years ago, making specific reference to its benefit for blood group A individuals with cardiovascular problems. In general the plant has a good track record, especially, if used in quite low doses for extended periods of time. The herb seems to allow cardiac patients to derive extra benefit from exercise (link), has some very nice effects on the artery lining (link) and has been shown to lower blood pressure in patients taking diabetic medication. (link)

Hawthorn was shown to be well tolerated and safe. However, it should not be used as a substitute medication in circumstances of active heart disease or concurrently with other cardiac medicines unless under the supervision of a physician trained in its use. In one study, it actually seemed that the hawthorn group had a worse outcome than the placebo group. (link) Hawthorn also does produce occasional side-effects, though they appear uncommon and rather mild.(link) Perhaps this is the darker side of the biochemical individuality revolution; it's no longer acceptable to claim that all natural products are safe in every person. Anything that can add to the personalization of herbal recommendations can only help to increase their safety profile.

Blood type A women get more complications from fertility treatment

Ovarian hyperstimulation syndrome is a potentially life-threatening complication during controlled ovarian stimulation for fertility treatment. Since no association of this condition with ABO blood groups was known, we compared ABO antigens with severity and onset of symptoms in a case-control study...The odds ratio for patients undergoing controlled ovarian stimulation with blood group A versus O to develop the early-onset form of this condition was 2.171 (p-value 0.002). Blood group A may be associated with early-onset ovarian hyper-stimulation syndrome in Caucasians...This possible association may be considered for an individualized hormone dosing in controlled ovarian stimulation.

Article Link | Article Link

Comment:
Ovarian hyperstimulation syndrome (OHSS) is a complication from some forms of fertility medication. Most cases are mild, but a small proportion is severe. Symptoms can range from a more mild form that includes abdominal bloating and feeling of fullness, nausea, diarrhea, and slight weight gain to a more severe form that includes and fullness/bloating above the waist, shortness of breath, urination significantly darker or cessation of urination altogether, calf and chest pains, marked abdominal bloating or distention, and lower abdominal pains. This study looked at 127 Caucasian patients hospitalized because of ovarian hyperstimulation syndrome after receiving in vitro fertilization, in the period from January 2000 to February 2007 and found that blood group A was markedly more frequent and blood group O less frequent in patients with ovarian hyperstimulation syndrome.

Other studies have found a slightly greater incidence of ovarian cancer in women who are blood group A (link) and blood group antigens (as mucins or 'blood group substances') are known to be richly deposited on ovarian tissue. (link) Hopefully fertility specialists will consider individualizing hormonal treatment by blood group when working with fertility patients.

Four patients developed thrombosis (clots) in the jugular or subclavian vein, none of whom had blood group O; this correlates with earlier studies linking blood groups other that type O with an increased risk of thrombosis (link) at some of this clotting may in fact be due to enhanced sensitivity to estrogen, at least in women who are not blood group O.(link)

What was that? Being Rh positive may increase your risk of hearing loss

Noise-induced hearing loss (NIHL) is one of the most common occupational problems and is one of the main causes of deafness. Many factors cause NIHL. Individual susceptibility is one of them. Rhesus (Rh) antigens and ABO blood groups can be factors in determining individual susceptibility. In conclusion, we suggest that the people with Rh-positive blood group are more prone to develop NIHL.

Article Link

Comment:

The researchers looked at factory workers who had been exposed to a noise level more than 85 dB for 8 hours a day for a period of over 15 years. Two hundred and nineteen (55.4%) of Rh-positive workers and seventeen (39.5%) of Rh-negative workers have noise-induced hearing loss, and the difference between the two groups was statistically significant (P < 0.05). There was no link between hearing loss and ABO blood type.

If you are a rabid reader of this blog, you'd immediately notice that these results are just ever-so-slightly statistically significant (and not be much of a discovery) since given enough noise, virtually anyone will develop hearing loss. However we could speculate that something in being Rh positive influences the structure of the ear anatomy to make these people more likely to get hearing damage. Or on the other hand, what is it about being Rh negative that makes these people less likely to get hearing loss?

An earlier study with infants and adults also showed a higher incidence of hearing loss in Rh positive people, with a slightly better level of significance (0.01) if the mother was Rh negative blood type (which might support the idea that the problem would then be seen in the incompatible Rh-positive children). Another maternal influence via blood group!

Diet influences epigenetic regulation of super oxide dismutase (SOD) gene

The impact of nutrition on the epigenetic machinery has increasingly attracted interest. The aim of the present study was to demonstrate the effects of various diets on methylation and gene expression. The antioxidative enzyme mitochondrial superoxide dismutase (MnSOD) was chosen as the model system because epigenetic regulation has been previously shown in cell lines for this gene. A 3-fold increase in the expression of the MnSOD gene was associated with decreased CpG methylation of the analyzed promoter region in the vegetarian group compared with the age-matched omnivores group. These results indicate that diet affects the epigenetic regulation of human MnSOD.

Article Link

Comment:

The super oxide dismutases are a class of enzymes that catalyze the conversion of free radical superoxide molecules into oxygen and hydrogen peroxide. They are an important antioxidant defense in nearly all cells exposed to oxygen. SODs 'outcompete' healthy tissue for the damaging free radical molecules. They protect the cell in a way reminiscent of a common scene in the the old Laurel and Hardy movies where two soldiers in a trench hoist a helmet on a stick above their heads and then retrieve it having been shot full of bullet holes. Although SOD supplements are a common item on health food store shelves, oral SOD products are completely destroyed in the gut, so methods to increase the native (endogenous) production in our own cells would be optimal.

Epigenetics is best explained as the 'non-genomic' or 'post-genomic' control of gene expression, mechanisms such as DNA methylation, or histone acetylation, which act a 'volume controls' on the ability of the cell to read the section of DNA that contains that gene. In the case of this study, the vegetarian group has less methylation on the CpG section of promoter region of the SOD gene.

In English, what they are saying is that diet removed some of the restrictions (methyl groups) on the part of the gene that activates it (the promoter region). Removing methyl groups usually takes the brakes off a gene, especially when they are in the gene's cystine-rich 'front.'

Exciting stuff. Now we'll need to see exactly which specific foods have the maximum epigenetic effects on SOD.

Until next week.

Note to readers: By mistake I had uploaded an earlier, non-spell-checked version of this entry on Monday. I beg your indulgence on this matter. Although I am a reasonably good speller, if truth be told I am a terrible typist.

Welcome to The Weekly Transfusion, 1.4 for the week of April 6, 2009.

Editorial: Medical journal statistics for autodidacts

You can become a better consumer of health information if you take the time to read the research source material (i.e the scientific publication in which the original claim was made). Of course if the study is technical you can see quite a bit of jargon that you may or may not understand. However many medical terms are widely understood and where you bump up against the odd phrase or name that you don't comprehend, there are usually places on the Internet where you can find simple, easy to understand explanations. Wikipedia is actually pretty good for this type of look-up, as long as the subject at hand is not controversial.

However, methodology and monikers aside, most scientific studies distill down to a simple testable premise which is easily understand by almost anyone. Did the medicine work? Was the association between this gene and that disease valid? Past asking the question, what is needed next is to look at and gauge the value of the answer. Surprisingly, even though this is usually some sort of statistical type of answer (and most laypeople are not well versed in statistics) once you know what to look for, you'd be amazed just how easy it is to evaluate most studies.

Most research studies feature a subsection entitled Results or Conclusions. It is here that the results are most often given. There are many way of calculating statistical significance, but the premise is quite simple: What is the chance that the thing we just observed/ hypothesized was random versus the odds of it being due to the relationship we are studying. This is known as probability and in statistics is usually called the P value. To find out just how significant the results of any study are, just look for the P value. The smaller this number is, the less likely the results occurred by chance. Put another way, the lower the P value the more likely you'll want to view the results as significant or important.

The great Ronald Fisher viewed P values as measures of the evidence against a hypotheses, sort of like how a prosecutor presents a case based on exceeding the jury's sense of 'reasonable doubt.'

Now for the secret (OK, not so secret) key to taking control of the medical facts in your life: The standard level of significance used to justify a claim of a statistically significant effect is when P is equal to or less than 0.05; in essence, a one-in-twenty chance that the result had nothing to do with your hypothesis.

For better or worse, the term 'statistically significant' has become synonymous with P<=0.05.

So when looking at any published results, always look for the P value and if it is greater than five cents on the dollar (0.05) you'd probably want to ignore that results (unless the premise of the article was that the researchers failed to show a relationship, which is of course just another type of observation; however, these types of studies usually don't make it out of the researcher's file cabinet) or take a look at the methodology behind the study (scientists are human; studies can be poorly designed and the conclusions derived may not have been the best test of the hypothesis).

So, P<0.05 means the results are significant, but just barely. Good enough to convict, but also likely to send a few innocent people to jail as well, since there are still strong indications that the hypothesis fails to account for the whole of the facts. Personally I like to see P values of at most 0.01-0.02 before I get excited about anything I'm reading. However I do make exceptions for studies with small numbers of participants, or if the we're dealing with an herb or vitamin where the effects studies may be slight or slow to surface.

Oftentimes you'll see P values with lots of zeros. That means they've found a more statistically reliable result. For example, the P value in the following article is P<0.001. This actually means that there 1 in a 1000 chance of the result being a random occurrence and a 999 in 1000 chance that the result was related to the premise of the study.

Just remember, look for at least a P<0.05. That means the results were statistically significant. Beyond that the more zeros you see in the P value, the better. Try your new-found statistical powers on the articles below. Look for the P values in the studies. What do they signify?

Now that you can evaluate scientific material at its source, you'll be less likely to fall for the 'man bites dog' con-jobs that are all too commonly reported in the news or as what passes for scientific discussion these days.

Resting heart rate as a low tech predictor of heart problems in women

In a large, diverse group of postmenopausal women, resting heart rate was an independent predictor of coronary events, with higher heart rate associated with greater risk. The relation between resting heart rate and risk of coronary events was stronger in younger postmenopausal women than in older ones. Resting heart rate did not independently predict stroke.

In general, age, body mass index, and saturated fat consumption were higher and cardiovascular risk factors such as hypertension, diabetes, smoking, hypercholesterolaemia, and depressive symptoms more prevalent in women with higher resting heart rate, as was self reported nervousness. Physical activity and alcohol use were inversely related to heart rate (both P<0.001), and heart rate was lower in women who used postmenopausal hormone therapy than in those who did not (P<0.001).

Article Link

Comment:

One can't argue that this is about as low tech a predictor of future health problems as one is likely to find. It has already been shown that resting heart rate predicts coronary events in men. For women however, the relation between heart rate and coronary events or stroke has been uncertain. The study broke the participants into groups including a 'high heart rate group' whose heart rate was greater that 76 beats per minute and 'low heart rate group' whose heart rate was greater than 61 beats per minute. The association with 'coronary events' (aka heart attacks and death). This association appears stronger in women aged 50-64 than in those aged 65 or older

Being overweight makes you age faster

Obesity and weight gain in adulthood are associated with an increased risk of several cancers. Telomeres play a critical role in maintaining genomic integrity and may be involved in carcinogenesis. Using data from 647 women ages 35 to 74 years in the United States and Puerto Rico (2003-2004), we examined the association between current and past anthropometric characteristics and telomere length in blood. These findings support the hypothesis that obesity may accelerate aging, and highlight the importance of maintaining a desirable weight in adulthood.

Article Link

Comment:

A telomere is a region of repetitive DNA at the end of chromosomes, which protects the end of the chromosome from destruction. When DNA needs to be read (to replicate itself, or generate RNA so as to begin coding proteins) a problem arises in that the enzymes that duplicate the chromosome and its DNA cannot continue their duplication all the way to the end of the chromosome. They need a blank area to 'park' much like the cassette tapes of days past had white 'leader tape' at their front and the back so that the tape head did not start in the song itself. Unlike cassette tape, every time DNA reproduces, a bit of the white leader tape, the 'telomere' at the end, is frittered off and has to be replaced. Telomeres and replenished by an enzyme, the telomerase reverse transcriptase. Telomeres protect a cell's chromosomes from fusing with each other or rearranging - abnormalities which can lead to cancer - and so cells are normally destroyed when their telomeres are consumed. In the women studies for this article, those having a higher body mass index (BMI) in their 30s were associated with shorter telomere length in their 40s (P < 0.01).

I suspect some of this association is epigenetic, and points again to the fact that the GT5 Warrior epigenotype may well need to get their weight profile optimized early in life and be increasingly calorie conscious as they age.

Vitamin D, adult-onset diabetes and metabolic syndrome

Vitamin D is a potent immunomodulator that also enhances the production and secretion of several hormones, including insulin. Vitamin D deficiency has been associated with increased risk of type 1 diabetes. Glycemic control and insulin resistance are improved when vitamin D deficiency is corrected and calcium supplementation is adequate.

Article Link

Comment:

More and more information is surfacing about vitamin D (actually more of a hormone than a vitamin) and insulin resistance. Studies consistently show that vitamin D levels in both North America and the Pacific are typically lower than optimal. In the USA , most vitamin D intake from foods is provided by fortification. Canada and New Zealand have fewer fortified choices, and intakes are correspondingly lower. The mechanism of action of vitamin D in adult onset (type 2) diabetes is thought to be to its role in the control of plasma calcium levels, which help regulate insulin synthesis, but may also be the result of vitamin D stimulating the insulin secreting (beta) cells of the pancreas directly. If you have a history of metabolic syndrome or adult onset diabetes in close family members you may want to consider adding vitamin D to your supplement regimen. However, make sure that you do it in partnership with a nutrition professional.

One from the vaults: Mom's blood type can influence child's risk of Strep (1978)

In a prospective study of maternal genital colonization with streptococci at the time of delivery, epidemiological data, including blood type (ABO group), were recorded for the 1,062 patients studied. Blood type B was found in a statistically significant (P <.005) higher proportion of patients colonized with streptococci (28%) compared with the total population (16.4%)

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Comment:

Evidence suggests that probiotic supplementation does change the vagina flora of women. Since it appears that the route of transmission of Streptococcus is from the birth canal, physicians should recommend probiotic supplementation for pregnant women beginning 3-4 weeks prior to expected date of delivery as a way to prevent streptococcus infection in neonates. This should be especially emphasized if the mother is either blood group B or AB.

This study again illustrates the fact that some of the best ABO correlation studies are outside the purview to today's physicians, most of whom would tell you that any research from 1978 is better suited to a history class than to any thing taught in medical school.

Since Mother's Day is fast approaching, also remember that recurring otitis media (ear infections) is strongly associated with the child's mother being blood type A. In fact the correlation here is quite startling. Children of mothers who are blood type A are twenty seven times more likely to get a second ear infection within one year of contracting the first. To give you an idea of just how strong this association is, look at the chart below to compare the RR (relative risks) of a few other disease/ lifestyle links.

Update: IfHI 2009

Just a quick word to the wise about the IfHI Conference, Norwalk Connecticut, June 5-7. We had run out of available rooms at the Dolce Center Campus. However 10 additional rooms have just been made available. Unlike previous conferences, where attendees could book almost to the day of the event, IfHI 2009 looks like it will be completely booked by the middle of May, a full month before the event. If you are planning on attending, either for certification or just personal enrichment, please make your reservations ASAP, especially if you want to stay overnight on campus.

Until next week.