A02 evolutionary explanations of food preference Flashcards
What are the 4 sections
The importance of car loves in early diets
Coukd early humans have been vegetarian
Are all food preferences a product of evolution
Taste aversion
Who showed evidence to support idea that calor intake was important
Gibson and Wardle
What did Gibson and Wardle do and find
Said best way to predict what a 4 or 5 years old child would choose for a fruit would be the amount of calories not sweetness or colour etc
Bañas and potato’s in this case
Demonstrated evolutionary preference for calorie rich food
Who argued that early humans were vegetarian
Cordain
What did cordain do and find
Early humans consumed most if the calories from sources other than saturated animal fats
Who argued agaibst cordain
Abrams
What did abrams do and find
Anthropological evidence
Showed that all societies prefer animal foods and fats
Plus not possible for early humans to have lived without animal fats
Talk about are all food preferences a product of evolution
Many things that were important to out ancestors such as animal fats are now harmful
So we are more likely to avoid them to lead a healthy life
So today cz we want less cholesterol this isn’t really an evolutionary thing
What are the 2 sections for taste aversion
Explaining taste aversion in humans
Detecting toxins
Talk about explaining taste aversion in humans
Taste aversion can be explained by biological preparedness
This occurred so that each species has the ability to learn certain associations more easily than others to help them survive.
Talk about detecting toxins
Scientists say that bitter taste developed so that we can identify toxins in our food this helps survival. Explains why certain gebes for detecting toxins are widespread today.
Other stuff to add
Preference of fatty foods indicated by success of fast food restaurants
Understanding taste aversions acquired during chemotherapy
