Men inherit the baldness gene from the X chromosome that they get from their mother. Female baldness is genetically inherited from either the mother's or father's side of the family. Baldness may be influenced by a number of other factors as well, including age, health, diet, hormones, seasonal changes and climate.
The X or female chromosome carries the primary baldness gene, and men inherit this X chromosome from their mothers. This makes the hereditary factor around baldness most dominant on your mother's side.
A 2017 review found 63 genes that may play a role in male pattern baldness, with only six of them found on the “X” chromosome. Research has also found that more than 80 percent of people experiencing noticeable balding had a father who also lost their hair.
Based on identical twin studies, he and other researchers have calculated that somewhere between 79 and 81 percent of baldness is determined by genes.
At what age do people typically start to lose their hair? Hair loss can start as early as your teenage years or might not occur until you're well past retirement. Generally, people begin noticing signs of hair loss in their 30s and 40s. More significant hair loss often happens when people reach their 60s and beyond.
Hair loss starts between 18-25 in most men. As a man passes 35-40, it usually slows down and by the time they are 50-60 it is often, but not always stable. Hair transplants at your age do very well.
By the age of 35, approximately 66 percent of men will have experienced some degree of hair loss. By the age of 50, approximately 85 percent of men will have significantly thinner hair.
All men inherit a Y chromosome from their father, which means all traits that are only found on the Y chromosome come from dad, not mom. The Supporting Evidence: Y-linked traits follow a clear paternal lineage.
Baldness can of course skip generations! If you have bald relatives on both sides of your family tree the chances are high you will be too. However, if the baldness shows up only on one side, it's highly possible the MPB gene will skip not only you but also your siblings. This is how the recessive gene works.
We inherit a set of 23 chromosomes from our mothers and another set of 23 from our fathers. One of those pairs are the chromosomes that determine the biological sex of a child – girls have an XX pair and boys have an XY pair, with very rare exceptions in certain disorders.
Our mitochondrial DNA accounts for a small portion of our total DNA. It contains just 37 of the 20,000 to 25,000 protein-coding genes in our body. But it is notably distinct from DNA in the nucleus. Unlike nuclear DNA, which comes from both parents, mitochondrial DNA comes only from the mother.
While the numbers are different according to different surveys, it appears that either Greece, Macedonia, or the Czech Republic has the highest rate of baldness in the world. These nations each have over 40% of men with acute hair loss.
Certain races have higher rates of hair loss compared to others. Caucasians have the highest rates out of all the ethnic groups. On the opposite end of the spectrum, Native American Indians, Inuits, and Chinese have the lowest rates.
No evidence of a link between hair loss and premature death was found in a large and well-known Danish study published in 1998 in The Journals of Gerontology. Perhaps surprisingly, other signs of aging like wrinkles and gray hair were not linked to early deaths, either.
However, it's possible to predict whether a man will lose hair with pretty good certainty. Most are fated to at least have their hair thin out. “Male pattern baldness affects around 80 percent of men by the age of 80 years,” the researchers wrote.
It usually takes 15-25 years to go bald, but can be quicker. Typically, at first the hair begins to thin (recede) at the sides (temples). At the same time, the hair usually becomes thin on the top of the head. A bald patch gradually develops in the middle of the scalp.
Unfortunately, male and female pattern baldness is not reversible without surgical intervention. However, if detected early enough, certain medications, such as minoxidil, finasteride, and Dutasteride can help halt the progression of thinning hair.
Can thin hair become thicker again? A person cannot change the texture of their hair. However, the hair may grow back after chemotherapy or pregnancy, for example.
If you can easily see your scalp through the hair, it's thin. If you can't, it's medium or thick.
The study, published in the journal Age and Ageing, also found that if the father lived to 90, it did not correlate to increased longevity and health in daughters. However, if both the mother and father lived to 90, the likelihood of the daughter achieving longevity and healthy aging jumped to 38%, researchers said.
Researchers have previously shown that a person's IQ is highly influenced by genetic factors, and have even identified certain genes that play a role. They've also shown that performance in school has genetic factors. But it's been unclear whether the same genes that influence IQ also influence grades and test scores.
Boys, on the other hand, only receive a Y chromosome from their father and an X chromosome from their mother. That means all of your son's X-linked genes and traits will come straight from mom.