Hair thickness is an “additive" trait. This means that if you inherited two copies of the “thick hair" version of the gene (one from each parent), you'll likely have even thicker hair strands than if you only inherited the "thick hair" version from one parent.
Genetic factors appear to play a major role in determining hair texture—straight, wavy, or curly—and the thickness of individual strands of hair. Studies suggest that different genes influence hair texture and thickness in people of different ethnic backgrounds.
And it is true: the hereditary factor is more dominant on the mother's side. If your dad has a full head of hair but your mom's brother is a 5 on the Norwood Scale at age 35, chances are you will follow your uncle's journey through MPB. However, the gene for MPB is actually passed down from both sides of the family.
In women, thinning hair is common. Hereditary-pattern baldness is typically identified by both the pattern of hair loss and a history of other family members with a similar type of hair loss.
Caucasians have the highest hair density among the ethnicities studied. Black people have the lowest. Asian people have hair density that falls somewhere in between.
Hair texture.
Caucasian hair usually appears thicker since it is more difficult to see through the scalp than other ethnic hair types. However, Asian hair is the thickest and coarsest hair of any ethnic group.
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.
One popular myth is that hair loss in men is passed down from the mother's side of the family while hair loss in women is passed down from the father's side; however, the truth is that the genes for hair loss and hair loss itself are actually passed down from both sides of the family.
Here's the hard truth: Little can be done to permanently change the diameter of individual hair strands. Thickening products can do wonders to temporarily plump hair strands, but when it comes down to it, fine hair is genetic and can't be changed.
To get thicker hair, eat a healthy diet with omega-3 fatty acids, B vitamins, iron, and vitamin D. For thicker hair, it's important to use a sulfate-free shampoo and to stop using heat styling products like flat irons or curling irons.
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.
Unlike nuclear DNA, which comes from both parents, mitochondrial DNA comes only from the mother.
It's a fairly common misconception that a man's beard is inherited directly from his father. The truth is that beards are just like most other genetically derived features: they can come from either side of the family.
Scientists think many genes contribute to hair thickness. Research indicates that the EDAR gene, which influences hair follicle development, plays an important role in determining hair thickness.
Both of your parents give you two pieces of genetic information, called alleles, that determine what your hair type will be. The two alleles from your biological father combine with two alleles from your biological mother, giving you four in all.
If you can visibly see sections of your scalp underneath or through the hair, then your hair is thin. If you barely see your scalp at all, your hair is thick. If it's somewhere in-between, then your hair has a medium density.
The bottom line. There's no strong evidence to support using biotin for hair growth or to prevent hair loss in people without a deficiency. Because hair thinning and poor hair growth are sometimes associated with a biotin deficiency, correcting a deficiency can help restore hair growth in some people.
Here's the truth: You can't change the size of your hair follicles. If you were born with fine hair, it's genetics, and no product will completely alter that. Of course, there are ways to maintain your hair health, add volume, and keep it from getting any thinner.
Lifestyle factors could include using certain hair products, wearing your hair up too tightly, experiencing high stress levels, or not getting enough of certain vitamins and minerals in your diet. People who have immune system deficiencies could also have thinning hair.
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.
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.
On the other hand, China is a country where the number of men who go bald is the least. Some other countries like Japan, Thailand, South Korea, Hong Kong, Taiwan, and Malaysia also have low levels of male pattern baldness.
The Czech Republic is the country with the highest percentage of men losing their hair. In the Czech Republic, approximately 43 percent of men have either lost their hair or are losing their hair.
Follicles that are more oval in shape cause curlier hair to grow. Very tightly coiled hair is due to the nearly flat, ribbon-like structure of their follicles. This hair texture is very common in people of African ancestry. Not only is African hair often coiled, it also has a unique texture.