Final answer:
Evolutionary psychologists link our tendency to overconsume fatty foods to behaviors promoting ancestral reproductive success, which were beneficial in calorie-scarce environments but can be harmful today.
Step-by-step explanation:
According to evolutionary psychologists, our predisposition to overconsume fatty junk foods illustrates that we are biologically prepared to behave in ways that promote the reproductive success of our ancestors. Consuming high-calorie foods would have been advantageous in environments where food was scarce, allowing our ancestors to store energy and thus improve their chances of survival and reproduction. However, these traits can be maladaptive in the modern context where food, particularly high-calorie food, is abundant, leading to health issues such as obesity and heart disease.