Food habits and preferences

Lactose intolerance
lactose - a sugar in milk
lactase - enzyme that breaks down lactose

Babies will have the enzyme needed to digest their mother's milk and this capability is only maintained if they continue to drink milk after weaning, otherwise the body stops producing lactase thereby making the person lactose intolerant.
- herding culture and traditions of consuming milk discourages development of bodily intolerance to lactose

Are humans better off with vegetarian diets?
- ethics of killing animals tends to have greater prominence in the reasoning of the choice than dietary benefits
- more efficient to produce cropes to eat than for animal feed
- but then will our diets revert to being low quality and high in volume?

Craving what your body needs
- for fruit after binge drinking
- for calcium-rich foods when pregnant
- for sugar or caffeine when tired