People have employed many methods to disguise their age: eating a healthy diet rich in antioxidants, exercising regularly, protecting their skin from the sun and, if all else fails, undergoing plastic surgery. However, a recent Current Biology paper may make it harder for us to hide our true age. The authors describe a real-time PCR assay that can provide an estimate of a person’s age based on a tiny blood sample (1). Continue reading “Analyzing DNA to Determine a Person’s Age”