Kervran's book was indeed notorious in France in the early seventies, but
it was also notoriously based on clumsy analytical methods, protocols and
element balances. I remember to have been indirectly involved in some
far-fetched theory about the influence on chicken eggs of the type of mica
(lithic, potassic, magnesian) they were picking on soils derived from
stanniferous granites in Brittany. Kervran devised also a mass experiment
with soldiers isolated in the Sahara, by which he controlled what they
ate, and what was found in their sweat.
...dead horses never die...J.J.