Letters to the Editor 19804 Share this:EmailFacebookRedditTwitterPrint By Science News March 7, 2007 at 11:49 am What were the ages of the people in the study? Henry Dieter WeinschelLas Cruces, N.M. The participants, whose muscle cells showed several more-youthful signs if they ate fewer calories, were 35 to 38 years old. —P. Barry