Can a pill keep your DNA young?

Telomeres—repeating DNA sequences at the ends of chromosomes that become shorter with each cell division—have long tantalized biologists seeking to understand and control the aging process. When its telomeres become too short, a cell stops dividing and eventually dies. Stop that process and (just maybe) immortality beckons; hence the frenzy a decade ago when a group of researchers claimed they had figured out how to slow that winding-down. Now a second round of frenzy is under way. After years of research, the first telomere-targeting pills have hit the market, while other treatments are entering clinical trials. Continue reading