Does Stress Accelerate Aging? Fact or Fiction from Huffington Post

Many of us see President Obama's graying hair and think, "it must be all the stress he's under." We view Hillary Clinton's furrowed brow and assume, "the weight of the world is adding years to her face." But do stress and anxiety actually accelerate the aging process? Is there scientific evidence to back this perception?

The fact is, the results from research are themselves pretty gray. Some studies studies suggest that stress has direct negative effects on our physical and emotional health, but its exact relationship is complex and not yet fully understood.

Here is what we know. Acute anxiety is our natural response to a real or perceived threat -- what we call the fight/flight reaction. It involves a two-way communication between our brain and body, resulting in activation of our cardiovascular, immune and other biological systems. It's our survival instinct at work.

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