Men who develop male-pattern baldness— characterized by a receding hairline and thinning hair on the dome of their heads — may be at an increased risk of developing aggressive prostate cancer when they get older, says a new study published in the Journal of Clinical Oncology.

Researchers analyzed the hair-loss patterns of almost 40,000 men enrolled in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. They discovered that men who had male pattern baldness by age 45 had a 40 percent increased risk of developing aggressive prostate cancer than those men who did not experience male pattern baldness. Researchers suspect the link is due to increased levels of the male sex hormones. More studies are needed.Man controls hair loss