Vegetarian diets therefore contain less carnitine, and also often contain more carbodydrate than omnivorous diets...
...Carnitine influences carbohydrate metabolism. Abnormal carnitine regulation is implicated in complications of diabetes mellitus, cardiomyopathy, obesity, endocrine imbalances and other disorders.
When I experimented with veganism many years ago, I was struck by the tendency in the meatless community towards being overweight. It was accepted as normal, and an oft-heard sentiment was that vegetarians aren't underfed. I learned a valuable lesson that underfed and undernourished had different meanings.
Some of the consequences of increased carbohydrate intake in these [meat restricted] individuals may be compensated for by the natural epigenetic effect of lowered carnitine intake on the gene that enhances the concentration of this nutrient and resultant increased bioavailability.
Nature abhors a vacuum, even on a nano scale...
The body's ability to adapt and self-regulate is truly amazing. Makes me wonder though, if this sort of thing stresses other resources.