Telomeres Are the New Cholesterol. Now What?
\u201cI am a bit concerned about your telomeres,\u201d the doctor told me, evenly. Telomeres are the caplike segments at the ends of the strands of DNA that make up your chromosomes\u2014think of the plastic aglets at the ends of a shoelace\u2014and some of mine, he could see, were not as long as he would have liked them to be.