Gabe Mirkin, M.D.
Swedish researchers have shown that irregular periods
in female athletes may be caused by high levels of male hormones,
rather than just by not eating enough food, the commonly accepted
theory (Fertility and Sterility, Volume 79, Issue 4, 2003).
The researchers showed that many female athletes who have irregular
periods have much higher blood levels of masculinizing hormones
than those with regular periods.
Female athletes with irregular periods and high male
hormone levels usually also have larger muscles and bones, and
are stronger than the athletes with regular periods. This study
suggests that women who have high blood levels of male hormones
are more likely to become athletes and the masculinizing hormones
that make them better athlete are more likely to cause irregular
periods. Check with your doctor or a gynecologist.
May 1, 2006