The average lifespan has doubled in the past 200 years, but the rates of obesity, diabetes, and heart disease continue to climb.
Could it be that the genetic traits that once helped everyone live longer are now at the root of illness and death?
That's the theory in the new book, Too Much of a Good Thing: How Four Key Survival Traits Are Now Killing Us.
Author Dr. Lee Goldman, the Dean of Columbia University's medical school, examines why your body is out of sync with today's environment and how you can get back on track to better health.
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