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.
Hayflick (Box 1) proposes that telomere shortening may be the molecular equivalent of longevity determination. Hundreds of physiological, molecular and behavioural changes in normal cultured human cells herald the approach of the Hayflick limit.