How Aging Leads to Chronic Disease: A Two-Stage Model
Aging has long been explained in different ways. One traditional view is that it results from the gradual accumulation of molecular damage over time. Another perspective, based on evolutionary theory, suggests that natural selection strongly protects health during youth and reproductive years but becomes less effective later in life. As a result, biological effects that appear in older age may persist because they have little impact on reproduction. Over the past two decades, researchers have also explored the idea that biological programs beneficial early in life may continue operating later…
The skinny
The skinny isn't ready yet — notes appear once the transcript is processed.