Derrick Lonsdale

Derrick Lonsdale (April 22, 1924 – May 2, 2024) was a British-born American pediatrician and researcher into the benefits of certain nutrients in preventing disease and psychotic behavior. He was a Fellow of the American College of Nutrition (FACN), and also a Fellow of the American College for Advancement in Medicine (FACAM).

Lonsdale is known for his research into thiamine and his controversial theory that thiamine deficiency is widespread among Americans and predictive of anti-social behavior. Provided by Wikipedia