http://citd.scar.utoronto.ca/ANTAO1/Projects/Bogin.html

Perhaps it was the occasional (or regular?) consumption of leopard that

caused the hypervitaminosis A of the H. erectus individual from the Koobi

Fora formation, located on the eastern shore of Lake Turkana, Kenya. The

skeleton is dated to 1.6 million years B.P. (Walker et al. 1982), and
analysis

indicates that it was female and has "striking pathology" in the long bones

of the limbs. These bones have a deposit of abnormal coarse-woven bone,

up to 7 mm chick in places, above the normal skeletal tissue on the outer

surface of the bone. Walker and his colleagues consider many possible causes

for this pathological bone growth and conclude that an overconsumption of

vitamin A (hypervitaminosis A) is the most likely cause. Similar cases of

hypervitaminosis A have occurred in arctic explorers who consumed the liv-

ers of polar bear and seal. The liver stores vitamin A, and the liver of
car-

nivores, who are at the top of the food chain, usually contain the greatest

amounts of this vitamin. Walker et al. suggest that the cause of the bone

pathology in this specimen of H. erectus was due to eating the liver of car-

nivorous animals.