We know that at least some of the genes for hairiness are carried on the X chromosome – and the way these genes are expressed varies between different men and ethnic groups – but hairiness also correlates with high testosterone levels.
Too much testosterone can cause symptoms that effect a woman's physical appearance including: excess body hair, specifically facial hair.
Empirical studies, however, do not support the hypothesis that hairy males are more masculine in biological sense. For example, hairiness has not been found to correlate with traits that are associated with high testosterone levels like masculinity of voice or masculine body shape (e.g., Collins 2000).
Testosterone promotes body hair growth in men. As a result, one common symptom of low testosterone is a loss of body hair. You may notice thinning of your armpit or pubic hair. Many men find the change is most noticeable in their beard because they don't have to shave as often.
PROTECTION AGAINST THE SUN: People who have a hairy body are less prone to sunburn and rashes. Another purpose that they serve is to keep us warm. This process goes like this- when we feel cold, our body hair stands on end and trap warm air which is closer to the surface of the skin.
A Hairy Chest Might Mean You're More Intelligent
Although the research is dated, another study found that a majority of members of Mensa, or the genius club, had thick chest hair as well. It's not completely clear why hairy men seem to be more intelligent on the whole. And it's entirely possible this is a coincidence.
What Percentage Of Guys Have Chest Hair? A study of over 1100 men ages 17 - 71 found that only 6% had no chest hair at all, while 56% displayed a moderate amount of chest hair. 38% of men displayed a light amount of chest hair.
Men have higher levels of androgens than women, so their body hair tends to be more prolific. While it's hormones that stimulate facial hair growth, genetics determine how thick and dark a man's facial hair will be, so a fine goatee may be seen as something of an ancestral asset.
High testosterone causes
Excess testosterone in men can result from testicular or adrenal tumors. Even if these tumors are benign – that is, they aren't malignant or cancerous – they can still boost testosterone levels to unhealthy levels, as can steroid use and abuse.
Because roughly 10 percent of the body's testosterone is converted into DHT by an enzyme called 5-alpha reductase, men with high testosterone are more prone to baldness and, for the same reason, proliferating body hair.
As we age, our prolonged exposure to testosterone starts to play a visible role on other body hair as well. Just like it transforms the vellus hair on a young man's face into a thick beard, it also changes the nearly invisible hair that grows in places like our ears into thicker strands.
A hairy chest signals higher intelligence in a man, somewhat tongue-in-cheek research finds. Dr Aikarakudy Alias, a psychiatrist, has found that hairy chests are more frequent among men who are highly educated, such as doctors.
Some Women Like it Hairy….
According to the survey, some women actually prefer hairier male bodies than bare male bodies. They feel as though hairlessness on men looks prepubescent and unnatural. The survey also suggests that women prefer male facial hair and body hair because it also makes them appear older and wiser.
Trimming is your best option: If you're content with your chest hair and simply want to avoid any unruliness, then get a manscaping body groomer. This will allow you to keep the chest hair at a short but flexible length. You won't look like a brillo pad, nor will you sandpaper your partner.
Like so many things, it comes down to a mixture of genetics and hormones. We know that at least some of the genes for hairiness are carried on the X chromosome – and the way these genes are expressed varies between different men and ethnic groups – but hairiness also correlates with high testosterone levels.
HOWEVER, SOME CHEST HAIR IS CONSIDERED ATTRACTIVE
Research indicates that “light” chest hair is considered the most attractive, at least according to women. And this walks hand-in-hand with the research that points to light stubble being the most attractive form of facial hair.
Hair growth and size is modulated by hormones, in particular androgens like testosterone, which kick in during puberty. As men generally have higher levels of testosterone than women they tend to have more terminal hair.
Empirical studies, however, do not support the hypothesis that hairy males are more masculine in biological sense. For example, hairiness has not been found to correlate with traits that are associated with high testosterone levels like masculinity of voice or masculine body shape (e.g., Collins 2000).
“Research has shown that lifting heavier weights is the best form of exercise to boost testosterone,” says Dr. Jadick. “As muscle mass increases, it will trigger the body to produce more testosterone.”
All Types of Exercise Count. Endurance training and resistance training (such as weight lifting) both boost testosterone levels briefly, Schroeder says. Lifting weights or doing other strength-training workouts has a bigger effect on your testosterone, Schroeder says.
Hirsutism is excess hair growth on the body or face. For women, the hair may grow in areas where men often have a lot of hair, but women often don't. This includes the upper lip, chin, chest, and back. It's caused by an excess of male hormones called androgens.
How much hair you have on your body and head is also determined by your genes. Nearly everyone has some hair loss with aging. The rate of hair growth also slows. Hair strands become smaller and have less pigment.