Are bald men less fertile?
Are bald men less fertile? Well they are not as fertile as you may think: men who have lost their hair by the age of 30 have fewer spermatozoa, study reveals.
Even though a common a belief is that baldness is a sign of fertility in men, a new study reveals that men who lose their hair at young age, close to their 30s, might actually be less fertile.
It was estimated that the semen volume was approximately 60% less in men with moderate to more severe hair loss while researchers suggest that hormonal changes related to hair loss may affect the quality of the sperm.
The so-called androgenetic alopecia (AGA) is the most common cause of hair loss in men and women while scientists argue that premature AGA could be considered equivalent to Polycystic Ovary Syndrome (PCOS) in women. Androgenetic alopecia often turns to baldness and normally it affects about 50% of male population over the age of 50. However in some cases the symptoms could start at the end of adolescence.
In this current study, published in Dermatologica Silica, fertility experts and dermatologists in a collaborative effort, investigated potential links between hair loss, sperm quality and fertility. The doctors collected semen and conducted a series of tests in 203 young men (mean age 31 years old).
Men who participated in the study were classified into 2 groups: normal-mild AGA and moderate-severe AGA in order to investigate the difference in semen quality among the 2 groups.
They found that men with moderate to severe hair loss had their sperm quality in terms concentration, motility and morphology significantly decreased compared to other group, pinpointing bald men as less fertile.
The trend of considering bald men to have increased sexuality is based on the fact they have higher testosterone levels which could possible lead to a more intense sexuality. On the other hand, high testosterone levels is the exact of premature hair loss.
Yet, new research findings indicate that men with low testosterone levels may also lose their hair at a young age and that male baldness is more likely to be caused by a complex combination of both genetic and hormonal factors.