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New Scientist: Solved: the puzzle of how cells age.

“The research, published by the journal Molecular Systems Biology, shows that when an ageing cell detects serious damage to its DNA - caused by the wear and tear of life - it sends out specific internal signals. These distress signals trigger the cell’s mitochondria, its tiny energy-producing power packs, to make oxidising ‘free radical’ molecules, which in turn tell the cell either to destroy itself or to stop dividing. The aim is to avoid the damaged DNA that causes cancer.” Pretty smart.  Now, how do we prevent the DNA from getting damaged?

02/17/10 • 12:43 PM • Health • Science • No Comments

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