The drugs are synthetic versions of resveratrol, found in red wine, an organic chemical believed to have an anti-aging effect, by boosting activity of a protein called SIRT1. GSK, the pharmaceutical firm, is testing them on people with particular medical conditions, namely Type II diabetes and psoriasis, a serious skin condition. David Sinclair, professor of genetics at Harvard University, said aging might not actually be an "irreversible affliction". He said: “Now we are looking at whether there are benefits for those who are already healthy. "Things there are also looking promising. We're finding that aging isn't the irreversible affliction that...