Lose your temper on the road? Frustrated with colleagues at work?

You may be cutting your life short, warns molecular biologist Elizabeth Blackburn — who won the Nobel Prize in Medicine in 2009 — and health psychologist Elissa Epel, who studies stress and aging.

The authors claim in their new book, The Telomere Effect, that negative thoughts harm your health at the DNA level.

Research has shown that a person's "social relationships, environments and lifestyles" affect their genes.


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