ANSWER: First understand that this gentleman is a proponent of his own way of eating, so he is not impartial. Since the recommended blood type diets sometimes recommend high protein, he has a problem with that. Personally I find his opinion of Mourant disturbing.

You decide:

Mourant, Dr. A.E. MA, D Phil, DM, MRCP

Serological Population Genetics Lab, St. Bartholomews, Fellow 1957, 1977

Director, Serological Population Genetics Laboratory.

Medical Officer, Galton Lab, Serum Unit, Cambridge 1945-46;

Director, Blood Group Reference Lab, Ministry of Health and MRC 1946-65;

Honorary. Senior Lecturer in Haematology, St. Bartholomews Hosp. Med. Coll. 1965-77

Lister Institute of Preventive Medicine, Chelsea Bridge Rd. 1957;

Society for Study of Human Biology (Vice President 1960-63);

Human Biology Council 1987

Publications:

1954 The Distribution of Human Blood Groups

1958 The ABO Blood Groups, Comprehensive Tables and Maps of World Distribution

1959 "Human blood groups and natural selection", Cold Spring Harbor Symposia on Quantitative Biology, v. 24, p. 57

1963 Man and Cattle. (ed. jointly)

1978 Blood Groups and Diseases

1983 Blood Relations: Blood Groups and Anthropology



All of Mourant's works were published through Oxford Unversity or Cambridge University Press. I have no link to Mourant, other than that he is a reference source of mine, but to question his pedigree is just silly.