Every time a cell inside your body replicates, a slither of your youth crumbles to dust. This occurs via the shortening of telomeres, structures that 'cap' the tips of our chromosomes. Now, scientists in Israel say they've been able to reverse this process and extend the length of telomeres in a small study involving 26 patients. The participants sat in a hyperbaric oxygen chamber for five 90 minutes sessions per week over three months, and as a result, some of their cell's telomeres were extended by up to 20 percent. It's an impressive claim - and something many other researchers...