ANT336H1 Lecture Notes - Lecture 11: Thrifty Phenotype, Natural Selection, Starch
Document Summary
Natural selection stopped when we were able to rear 95-99% of our young. Some think that we have changed the world culturally that we don"t need to adapt and evolve anymore. Natural selection still happens in homo sapiens. Recent changes in human nutrition and metabolism. Ranges from completely vegetarian to almost entirely based on meat in animal foods. Strong variance in macronutrient composition (carbs, fats, proteins) Dependent on diferent factors (lifestyle, climate, environment) Humans are unique in that they are the only mammals to drink milk in adulthood. Cultural adaptation use less milk to produce some cheeses so people who are lactose intolerant can eat it. Europeans didn"t have lactose intolerance until ~4000, suggests that previously people have to process dairy in some way to be able to eat it. Diabetes afects ~415 million people, 8. 3% of the adult population.
