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"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 male pattern baldness (MPB). Ejaculation significantly lowers levels of relaxin in a male's body. Depending on frequency, it can raise or lower plasma testosterone. The claim that frequent ejaculations can cause baldness is often viewed with skepticism.
"Standing on One's Head Alleviates Baldness"
The blood-flow theory, which led men to stand on their heads in the 1980s, can be found in the advertising for many of the fake hair loss treatments for sale. 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.
"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.
"Shaving hair makes it grow back stronger"
Proposed as a popular remedy against baldness, it is 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 after the remaining hair has grown a few millimeters, no enhancement in thickness or overall quality can be observed.
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