Hair Growth Rate Asian hair shows the fastest growth rate in comparison to the other two hair types. African hair has the lowest growth rate.
A 2005 study in the journal International Journal of Dermatology also found a difference among races in the rate of hair growth. For example, Asian hair grows the fastest, while African hair grows the slowest. Related: Fur, wool, hair: What's the difference?
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.
A Caucasian person's hair also generally grows at a slightly faster rate than an African-American's hair. With that in mind, the common causes of hair loss are universal among the races, and most available treatments can be beneficial for hair restoration in both Caucasian and African-American patients.
African hair grew at a much slower rate than caucasian hair (mean +/- SD 256 +/- 44 vs. 396 +/- 55 microm day(-1)), and telogen counts were frequently higher in African hair (mean +/- SD 18 +/- 9% vs. 14 +/- 11%).
What Color Hair Is The Thickest Or Most Dense? A: In very general terms, the darker the hair, the thicker it is and the lower the density (hairs per area). For example, Asians have the darkest hair, the highest hair diameter and the lowest density.
The Hairiest Ethnicities: What Ethnicity Has the Most Hair? According to Personal Health via the New York Times, Caucasians are the hairiest ethnic group, with Semitic and Mediterranean people being the hairiest out of all Caucasians.
Black people's hair grows slower than any other ethnic group's hair. According to research hair grows an average of 1.3cm per monthand although it's true tha black people's hair grows slower than this, the difference is not extreme.
Sex: Male hair grows faster than female hair. Age: Hair grows fastest between the ages of 15 and 30, before slowing down. Some follicles stop working altogether as people get older. This is why some people get thinner hair or go bald.
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. Let's dive in deeper.
Racial gaps in life expectancy have long been recognized. The same CDC data show that nationally, Hispanic Americans have the longest life expectancy, followed by white and then Black Americans.
Hair Curvature
In contrast to African hair that is more flattened and often has twists and turns, Asian hair tends to be round in shape, straight, and more cylindrical. The low values of average curvature in Asian hair suggest a relatively straight hair.
Black Hair is Easier to Maintain
The darker the hair, the higher the concentration of melanin, therefore, black hair has the highest concentration. The benefit of having excess melanin in hair is it's less prone to sun damage, which is important to Sri Lankans as we are constantly under the sun.
Geneticists at the University of Tokyo and several other institutions in Japan, Thailand, and Indonesia have now used the HapMap to explore why Japanese and Chinese people have thick hair: The cross-sectional area of East Asian hair fibers averages about 30% larger than that of Africans and 50% larger than that of ...
So, can your genes also play a role in hair growth? Simply put, yes. Your genes are involved in several aspects of your hair's ability to grow, from your hair growth cycle to your risk of common hair-related issues such as male pattern baldness (androgenetic alopecia, or genetic hair loss).
There are two reasons why we believe African hair texture is genetic. Firstly, the texture is universal in Africans, while nearly absent from other ethnic groups. Secondly, it is consistently passed down to the children in each new generation.
Black hair is extremely prone to damage because of the shape of the follicle and there is no way to straighten the hair without minor damage to the hair. African-Americans many times find themselves using extreme amounts of heat protectant to maintain their curl pattern, and often that may not even work.
But the evolutionary reasons why hairiness varies with ethnicity are unclear. Caucasian people are generally hairier than the Japanese, for example, even though testosterone levels are the same. The difference seems to be in how sensitive the hair follicles are to those testosterone levels.
A gene variation of EDAR that arose about 30,000 years ago seems to give some people thicker strands of hair. More than 90% of Han Chinese, 70% of Japanese and Thai people, and 60% to 90% of Native Americans carry the “thick hair" version of the gene.
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.
According to the study, men and women both viewed people with brunette hair color as more attractive than those with any other hue.
Thick (Coarse)
Thick or coarse hair texture is the strongest hair texture and typically feels coarse or thick to the touch. Coarse hair contains all three hair layers – the cortex, cuticle and medulla.
Red is the rarest hair color, according to Dr. Kaplan, and that's because so few MC1R variants are associated with the shade. “Only three variants are associated with red hair,” she says. “If a person has two of these three variants, they almost certainly have red hair.