It markets a supplement called TA-65, which the company says lengthens telomeres, the caps on the ends of DNA associated with aging.

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The plan is to block telomerase, an enzyme that prevents the ends of DNA and seems to prevent cells from aging.

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In its European markets, for example, cosmetic company Juneva of Switzerland sells a product called DNA Skin Optimizer Fluid, which promises to help aging skin cells to renew and duplicate themselves by targeting the nuclei--Juneva says skin takes on a fresher, smoother appearance within days of use.

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We will be able to rejuvenate our organs in place by gradually replacing aging cells that contain genetic errors and short telomeres with cells containing our own DNA but without errors and with extended telomeres.

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