What genetics cause thin hair?

Author: Saul Conn  |  Last update: Monday, November 24, 2025

Together, these changes lead to hair thinning or loss. Researchers suspect that variants (also called mutations) in several genes play a role in androgenetic alopecia. However, scientific studies have confirmed only that variations in one gene, the AR gene, are involved in this condition.

Why is my hair so thin genetically?

Genetic factors influence and determine the size of the diameter in hair. Its volume varies from person to person. This is why some individuals are born with thin hair, while others are born with thick hair. In hair, the diameter is a very important element.

Is hair loss inherited from mother or father?

Contrary to the folk wisdom that baldness is inherited from one's mother's family, the condition seems to depend on genes contributed by both parents.

Can you stop genetic hair thinning?

Hereditary hair loss cannot be prevented, but there are medical treatments that can maintain, improve, and optimize hair growth, such as minoxidil, finasteride, and spironolactone. Topical minoxidil is FDA-approved for hair loss in men and women.

Can you fix genetically thin hair?

Genetically thin hair cannot be reversed by any medication or hair product. You should focus on promoting healthy hair with nourishing products. For styling, consider haircuts that complement thin hair; there are plenty of options. If you desire added volume, clip-on hair extensions are a great option.

Thinning Hair? 4 Hormone Deficiencies

Can thin hair become thick again?

Yes, absolutely! Stress, excessive heat styling, age and even genetics can deplete your hair's thickness. Keeping your scalp and roots healthy is how you can promote the growth of thick hair. You can do the same by oiling regularly, refraining from wearing tight hairstyles and following a nourishing hair care routine.

What vitamin makes your hair thicker?

Biotin remains commonly recommended by hair loss specialists at doses up to 5,000 mcg.

What does thyroid hair loss look like?

Severe and prolonged hypothyroidism and hyperthyroidism can cause loss of hair. The loss is diffuse and involves the entire scalp rather than discrete areas. The hair appears uniformly sparse.

Why is my hair so thin I can see my scalp?

A visible scalp through your hair can be a sign that it's thinning (but not always). The factors that contribute to thinning hair (and thus a visible scalp) include stress, diet, vitamin deficiency and ageing.

What is the best shampoo for thinning hair?

Top shampoos for thinning hair, at a glance
  • Best Overall: Nizoral Anti-Dandruff Shampoo, $15.
  • Best for Thickening: Kérastase Densifique Thickening Shampoo, $44.
  • Best for Damaged Hair: Vegamour Hydr-8 Shampoo, $38.
  • Best for Volume: Bumble and Bumble Thickening Volume Shampoo, $37.

Is genetic hair loss reversible?

There's no cure for normal hereditary hair loss, but treatment may help slow it down or stop it from getting worse. Some medicines and some health conditions may lead to hair loss. Read more about non-hereditary hair loss.

What traits are inherited from father only?

Below are some of the genetic traits that are inherited directly from your biological father.
  • Biological sex. Fathers are directly responsible for the biological sex of their offspring. ...
  • Y-linked inheritance. ...
  • Eye colour. ...
  • Puberty. ...
  • Height. ...
  • Dimples. ...
  • Fat storage. ...
  • Mental health issues.

Why am I balding but my brother isn't?

“If you inherit a dominant gene you will lose your hair. If you inherit the recessive gene, then you won't. That's why sometimes in a set of brothers, one will go bald and the other won't.” In fact, research has found 12 genes associated with baldness.

Can hair thinning be reversed?

You might be able to reverse hair loss, or at least slow it. With some conditions, such as patchy hair loss (alopecia areata), hair may regrow without treatment within a year. Treatments for hair loss include medications and surgery.

Can thin hair still be healthy?

In most cases, thinning hair does not result from overall health issues. If a person is concerned about hair loss or if it affects their mental well-being, they may wish to consult a doctor. Individuals should also seek guidance from a healthcare professional if they notice: sudden or unexpected hair loss.

What to eat to grow hair faster?

  • Eggs. Eggs contain various proteins that boost collagen production. ...
  • Green Leafy Vegetables. Green leafy vegetables are rich in vitamins A, C, carotene, folate, and potassium. ...
  • Vitamin C-Rich Citrus Fruits. ...
  • Seeds and Nuts. ...
  • Carrots. ...
  • Whole Grain. ...
  • Soybeans. ...
  • Avocado.

Can biotin regrow hair?

Despite its popularity in the media and amongst consumers, biotin has no proven efficacy in hair and nail growth of healthy individuals. Only 1 study has shown decreased levels of biotin in healthy individuals, though this data was confounded by multiple factors, including patient history.

What is a thyroid belly?

A common symptom of an underactive thyroid is weight gain, often around the abdomen. However, the American Thyroid Association states that the weight gain may not necessarily be due to the build up of fat, but the accumulation of salt and water.

What part of the body itches with thyroid problems?

Where might a person itch with thyroid problems? Itching can occur anywhere on the body, but often occurs in crevices such as the armpits, elbows, and groin.

What is the secret vitamin for hair growth?

1 - Vitamin A:

Role in Hair Health: Essential for cell growth – including your hair. It also keeps your scalp moisturized by supporting sebum production. Natural Sources: Leafy greens, carrots, sweet potatoes, pumpkin.

Which fruit is good for hair?

The most effective fruits for hair growth and thickness include oranges, strawberries, bananas, avocados, grapes, strawberries, guavas, peaches, and pineapples. They are high in vitamin C, which enhances collagen production and reduces the oxidative damage caused to hair follicles.

What pill makes your hair thicker?

Oral Finasteride

Finasteride slows the rate of hair loss and stimulates new hair growth by inhibiting the body's production of a hormone that destroys hair follicles. This medication is taken once a day by mouth and is most effective when taken at the same time each day.

Previous article
Is it OK to get laser hair removal with ingrown hairs?
Next article
How fast can you grow 2 inches of hair?