Anti-aging: A little stress may keep cells youthful

The aging-related protein SIRT1 regulates heat shock response, a mechanism cells use to combat stress

By Solmaz Barazesh, 13:35 PM February 19, 2009

A lot of stress can turn your hair gray, but a little stress can actually delay aging. A protein tied to protecting cells from stress also helps slow aging, a new study finds. The research, published February 20 in Science, identifies a key regulator of a mechanism cells use to prevent protein damage from stress.

Exposure to heat, cold or heavy metals can damage proteins and unravel them from their usual conformations — trauma that can cause cell death. But cells have a damage-limiting mec...

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