To clear the air, below are a few facts all pool owners should know: 1  Pool liners do not cost $10,000. 2  Pool liners generally do not last over 20 years. 3  While tears can happen, they are not likely.  Vinyl pool liners can look just as beautiful as fiberglass or concrete.
Chronic stress accelerates premature aging by shortening DNA telomeres. A wide range of studies have shown that the stress caused by things like: untreated depression, social isolation, long-term unemployment, anxiety attacks... can speed-up the aging process by shortening the length of each DNA strand.
Premature ageing can be reversed by reactivating an enzyme that protects the tips of chromosomes, a study in mice suggests. Mice engineered to lack the enzyme, called telomerase, become prematurely decrepit. But they bounced back to health when the enzyme was replaced. The finding, published online today in Nature, hints that some disorders characterized by early ageing could be treated by boosting telomerase activity.