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Myth or Truth? Hair loss can be caused by emotional stress, sexual frustration etc. Emotional stress has been shown to accelerate baldness in genetically susceptible individuals. Stress due to sleep deprivation in military recruits lowered testosterone levels, but is not noted to have affected SHBG. Thus, stress due to sleep deprivation in fit males is unlikely to elevate DHT. Whether it can cause hair loss by some other mechanism is not clear. Myth or Truth? Bald men are more "virile" or sexually active than others Levels of free testosterone are strongly linked to libido and also DHT levels, but unless free testosterone is virtually non-existent levels have not been shown to affect virility.
Men with androgenic alopecia are more likely to have a higher baseline of free androgens. However sexual activity is multifaceted, and androgenic profile is also not the only determining factor in baldness.
Additionally, because hair loss is progressive and free testosterone declines with age, a person's hairline may be more indicative of their past than present disposition. Myth or Truth? Shaving hair makes it grow back stronger Proposed as a popular remedy against baldness, it's very probably just an illusion similar to the one perceived after shaving one's beard or mustache. Shaving one's head doesn't increase the number of healthy hair present on the scalp, and, when the remaining hair has grown a few millimeters, no enhancement in thickness or overall quality can be observed. Myth or Truth? Frequent ejaculation causes baldness There are many misconceptions about what can help prevent hair loss, one of these being that frequent ejaculation may have an influence on MPB. While ejaculation significantly lowers levels of relaxin (a 5-alpha reductase inhibitor) in a male's body and causes testosterone levels to temporarily elevate, the claim that frequent ejaculations can cause baldness is often viewed with skepticism. Higher free testosterone levels may correlate with both hair loss and increased sex drive in predisposed individuals. Myth or Truth? Standing on one's head alleviates baldness The "blood-flow" theory, which led men to stand on their heads in the 1980's, can be found in the advertising for many of the fake hair-loss treatments for sale on the internet. While Minoxidil is a vasodilator and is speculated to work, in part, by increasing blood flow to hair follicles, there is no evidence that standing on one's head can alleviate baldness. Myth or Truth? Tight hats cause baldness This one probably started in the military where young men entering the service were required to wear hats and soon showed signs of going bald, or at least of hair thinning. This is due to coincidental timing. The age that young men enter the military is also the same age that male pattern hair loss begins. This is due to dihydrotestosterone, not hats. Hats do cause hair breakage and, to a lesser degree, split ends. Since hats are not washed as frequently as other clothing, they can also lead to scalp uncleanliness and possible P. ovale contamination in men with naturally oily scalps. Source: This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Baldness".
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