Why am I losing hair?

Author: Ernie Sipes MD  |  Last update: Wednesday, November 12, 2025

It can be the result of heredity, hormonal changes, medical conditions or a normal part of aging. Anyone can lose hair on their head, but it's more common in men. Baldness typically refers to excessive hair loss from your scalp. Hereditary hair loss with age is the most common cause of baldness.

Why is my hair falling so much suddenly?

Hormonal changes (such as pregnancy, childbirth or menopause). Medical treatment (such as chemotherapy and certain medications). Nutritional deficiencies (especially not getting enough iron or protein). Stressful events (like having surgery or losing a loved one).

How do I stop my hair from falling?

Taking proper care of the hair and scalp can help prevent hair loss. It may also improve hair growth. Keeping the scalp and hair clean may also prevent hair damage and loss. The American Academy of Dermatology Association (AAD) recommends gently massaging the shampoo into the scalp but not into the hair.

What are the reasons for hair fall in females?

Causes of hair loss
  • Hereditary hair loss. Both men and women develop this type of hair loss, which is the most common cause of hair loss worldwide. ...
  • Age. ...
  • Alopecia areata. ...
  • Cancer treatment. ...
  • Childbirth, illness, or other stressors. ...
  • Hair care. ...
  • Hairstyle pulls on your scalp. ...
  • Hormonal imbalance.

What does stress hair loss look like?

No Visible Pattern. With stress-related shedding, hair falls out evenly all over your scalp instead of in a defined pattern. You'll likely notice more hairs than usual coming out while shampooing, combing, or on your pillow, clothing, and bathroom floor.

8 Reasons Why You Might be Losing Hair

Will hair grow back if it falls out from stress?

Stress and hair loss don't have to be permanent. And if you get your stress under control, your hair might grow back. If you notice sudden or patchy hair loss or more than usual hair loss when combing or washing your hair, talk to your doctor.

How do I know if my hair loss is hormonal?

Unlike hair loss caused by chemotherapy or autoimmune disorders, hormonal hair loss is gradual. You might not notice it until your hairline has visibly receded, your ponytail has grown thinner, or your scalp has become visible.

What vitamin am I lacking if my hair is falling out?

Only riboflavin, biotin, folate, and vitamin B12 deficiencies have been associated with hair loss. Vitamin B2 (riboflavin) is a component of two important coenzymes: flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) [22].

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.

How can I stop my female hair loss?

How is hair loss in women treated?
  1. Reducing your stress, like talking with a mental health professional.
  2. Not using hair products (like chemical treatments) that damage your hair.
  3. Taking vitamins or supplements for a vitamin deficiency.
  4. Changing your hairstyling routine to avoid damaging your hair follicles.

How do I know if I'm losing too much hair?

It may be a sign that you're losing too much hair if: Increased shedding. Thinning or bald spots. Changes in hairline.

What is the best shampoo for hair loss?

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.

How do I stop my hair from falling so much?

Additionally, using supplements formulated for hair growth, avoiding excessive heat styling, using gentle haircare products, managing stress levels, and getting adequate sleep can help reduce shedding and promote healthy hair growth.

When I run my fingers through my hair it falls out?

It's perfectly normal to lose a few stray strands when running your fingers, or a comb, through your hair. But if you notice increased hair being pulled out when you are being gentle, this can be a cause of concern that you should get checked over.

Can hair grow back after thinning female?

If you've lost hair from female pattern baldness, it won't grow back without treatment. Proper treatment can stop hair loss and help regrow some hair.

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.

Can low iron cause hair loss?

Low iron levels can lead to hair loss. Iron deficiency can trigger a condition called telogen effluvium, which increases hair shedding and limits hair growth. Iron deficiency hair loss can be reversed if you get your iron levels back to normal. Oral iron supplements can help replenish your body's iron stores.

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.

Why am I losing so much hair as a female?

In other cases, thinning hair is triggered by something going on inside the body — for instance, a thyroid problem, a shift in hormones, a recent pregnancy, or an inflammatory condition. Hair loss may also be genetic. The most common genetic condition is known as female-pattern hair loss, or androgenic alopecia.

What is a hair pull test?

This simple test measures the severity of hair loss. During a pull test, a dermatologist grasps small sections of hair, about 40 strands, from different parts of the scalp and gently tugs. If six or more strands fall out, you have what's known as active hair loss.

What does vitamin D hair loss look like?

When deficiency disrupts vitamin D in your scalp, the anagen (growth) phase shortens. This prematurely pushes more resting follicles into the telogen (rest) phase. Excessive shedding occurs, resulting in thinner hair. Research clearly demonstrates this link.

What blood test shows hair loss?

CBC Test– The CBC test helps to measure blood components to diagnose various disorders, including anemia caused by iron deficiency and hair loss. The test provides information about white blood cells and platelets, which can help identify potential inflammatory conditions contributing to hair loss.

What does low estrogen hair loss look like?

The thinning may be more noticeable on areas like the front hairline, sides of the head, or top of the head. Though more shedding can occur, completely bald areas as a result of menopause are uncommon. Estrogen also affects production of scalp oil, called sebum. Less sebum leads to drier hair texture and a drier scalp.

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