Thinning Hair in Women:18 Causes with Treatment

Thinning hair in women is a common problem that can cause an abundance of distress and insecurity. It can occur for a variety of reasons, from genetics to hormones and medical conditions.

Regardless of the cause, the emotional and physical effects can be devastating. Women can experience panic, embarrassment, and a lack of self-confidence due to the fear of the condition becoming worse.

Fortunately, there are a variety of treatments and solutions available to help address thinning hair in women, ranging from lifestyle changes to medical treatments. Learning more about the causes and treatments of thinning hair can help women to manage the condition and feel more confident in their own skin.

Thinning Hair in Women causes
Thinning Hair in Women Causes and Treatment

18 Common Causes of Thinning Hair in Women

Some common causes of thinning hair in women include:

1.Genetics (heredity)

This reason is a tricky one. In this case, hair-fall/thinning happens because you are born with it. Female-pattern hair loss occurs due to genetics (a hereditary condition that happens with aging), termed androgenic alopecia.

In most cases, females, unlike males, do not experience bald spots or a receding hairline, but they do notice hair thinning along with the crown of the scalp.


Hair fall/thinning after a certain age is a natural phenomenon. As women age, the hair growth slows down, hair follicles shrink due to hormonal changes, hair becomes less dense, and the scalp may become visible.


Estrogen and progesterone hormone are primarily responsible for keeping the hair in the growing (anagen) phase. These hormones also help hair grow faster.

During menopause (a natural weakening or cessation of a women’s reproductive system when she enters her 40s or 50s) in women, there is a decline in the production of estrogen and progesterone hormones. As a result, hair follicles shrink, hair becomes too thin, and hair growth is stalled.

4.Radiation therapy to the head

Hair loss/hair thinning caused by radiation therapy may be temporary or permanent. At lower doses, hair loss is often temporary, but at higher doses and the radiation doses to the scalp or the brain, hair loss can be permanent.  The hair may not grow back the same as it was before.

5.Hairstyles and chemical hair treatments

Excessive hairstyling or styling your hair vigorously, such as tight ponytails, tight braids, hair weaves, cornrows, or pigtails, can trigger a type of hair loss traction alopecia – a condition where hair loss/hair thinning is triggered by repeated pulling of hair.

Hair dyes used for coloring hair contain chemicals that cause damage to hair follicles and lead to thinning hair and even permanent hair loss. Other treatments like hair perming, curling irons, hair straightening treatments, hot-oil hair treatments also can cause hair to fall out. If scarring happens, hair loss/damage could be permanent.

6.Lack of protein in the diet

Hair needs nutrition in the form of proteins. To have healthy and thick hair, you must eat a protein-rich diet like fish, eggs, kidney beans, lean meat, lentils, nuts, chia seeds, oats, quinoa, soy cheese, and much more.

Hair is primarily composed of keratin, a protein that serves as a building block for hair. The absence of a protein-rich diet leads to hair shedding and thus hair thinning.

7.Certain medications

Blood thinners (heparin and warfarin), antidepressants (Prozac, Jani mine, Tofranil, etc.), and blood pressure drugs (captopril and lisinopril) may trigger hair thinning and hair loss in some women.

Drugs such as methotrexate used for rheumatoid, acne medications containing vitamin A (retinoids), cholesterol-lowering drugs (simvastatin (Zocor) and (atorvastatin) Lipitor), NSAIDs, and lithium for bipolar disorder may result in thinning of hair in women as well.

8. Anabolic steroids

Women athletes using anabolic steroids (anabolic-androgenic steroids (AAS)) to increase their muscle mass may experience hair thinning/hair loss.

According to the ADD – American Academy of Dermatology, these steroids can similarly affect a woman’s body as PCOS (polycystic ovary disease) does, triggering hair thinning from the scalp. However, once the consumption of these medications is stopped, the hair will regrow, and hair health should show some improvement.


It is a medical condition also termed as “hair-pulling disorder.” It is an impulse control disorder in which people experience an irresistible urge or compulsion to pull their hair aggressively.

This condition is more common in women. This constant and recurrent hair pulling may result in bald patches in the scalp, thinning hair, and excessive hair loss.

10.Alopecia areata

This is a medical condition that results in immunity disorder. It results in irregular hair thinning/hair loss because of an overactive immune system.

The body’s immune system mistakenly attacks hair follicles ((the part of your body that makes hair) as foreign items. This triggers sudden and dramatic patchy hair loss, most often on the scalp. This can be treated with medical consultation and drugs like Rogaine.


Women who experience Systemic Lupus Erythematosus (SLE) experience non-scarring alopecia (hair loss). It is another autoimmune disorder in which hair follicles are attacked by immune system cells, triggering dramatic hair-thinning/hair loss.

12.Drastic weight loss

Sudden and tremendous weight loss can lead to myriad health issues, with hair loss being one of them. Drastic weight loss is a kind of physical trauma that can cause havoc on hair health and thickness.

Due to sudden weight loss, there is a huge reduction in essential nutrients needed by the body. As a result, there are mineral and vitamin deficiencies triggering hair shedding, thinning, and falling.

13.Physical stress

Physical stress that includes accidents, injuries, surgeries, and chronic illnesses results in physical trauma that may trigger hair thinning/hair loss. This condition is called Telogen effluvium. In this condition, there is excessive shedding of resting or telogen hair because of some sudden shock (accident, injury).

The significant stress pushes a large number of hair follicles into a resting phase. After some time, the impacted hair might fall out suddenly while combing.  Hair loss because of physical stress is usually temporary, and after a certain period of time, the hair becomes healthy again.

14.Emotional stress

Emotional stress churns the body and affects the hormones in unexpected ways. One effect is hair thinning and hair loss. A healthy diet, good sleep, and leisurely walks help to combat stress.

15.Polycystic ovary syndrome

Polycystic ovary syndrome (PCOS) is a common hormone disorder experienced by women. In this, women produce an increased level of androgens (male hormones) in their bodies. These extra androgens result in more hair on the body by thinning the hair near the front of the scalp. This is termed androgenic alopecia or female pattern hair loss.

This condition is treatable with certain medication and lifestyle modifications.


Hypothyroidism is a condition prevalent in older women in which the thyroid gland does not produce enough hormones required for normal functioning of the body, growth, and development.

Severe and prolonged hypothyroidism can result in thinning of hair and hair loss. The hair loss is diffuse and does not involve hair loss in the discrete regions but the entire scalp. The hair appears uniformly sparse. Medical treatment of this condition helps in the regrowth of the hair.

17.Iron-deficiency anemia

Women who have low iron levels are anemic, and it is one of the major causes of hair thinning and hair loss. Iron is stored in the hair follicles in the form of ferritin.

When the body has low iron levels, it starts using the iron stored in ferritin form in your hair follicles. As a result, hair becomes damaged, thin and the hair growth is stalled.

However, iron deficiency anemia can be reversed by having more iron foods (red meat, fish, greens, lentils, etc.). Even iron supplements are helpful.

18. Vitamin B deficiency

Vitamin B is an important element for healthy hair and scalp. Foods like nuts (almonds), whole grains (brown rice, barley, millet), legumes (beans, lentils), fruits (bananas, avocados), meat (red meat, poultry, fish), eggs, and legumes are rich in Vitamin A.

When women do not eat a vitamin B-rich diet and a deficiency, it leads to hair thinning/hair loss. This is reversible. Consumption of foods rich in vitamin B can improve hair health. 

Thinning Hair in Women Treatment
Thinning Hair in Women Treatment

Thinning Hair in Women Treatment

Fortunately, several medical treatments are available to prevent hair loss and promote hair growth. However, it is always advisable to consult your doctor before taking any of these treatments.

1. Minoxidil

Minoxidil (brand name Women’s Rogaine) is an over-the-counter (OTC) drug approved by FDA for topical use. It works by extending the duration of the growth phase of the hair follicles. FDA recommends that women use minoxidil 2% to encourage hair growth and prevent hair thinning/loss.

2.Estrogen therapy

Hormone replacement therapy (Estrogen therapy) can be beneficial in treating female pattern baldness (androgenic alopecia). This therapy involves supplying adequate hormone estrogen to make up for the reducing levels in women. Minoxidil is more effective and is considered as the treatment of choice.

3. Spironolactone

Also named Aldactone is a weak androgen receptor inhibitor. This medication effectively treats hair thinning/hair loss by binding to androgen receptors and reducing the body’s processing of testosterone.

4. Tretinoin

Topical tretinoin, also termed as Retin-A, when used in combination with 0.5 percent minoxidil, is beneficial in treating hair loss/thinning or female pattern baldness (androgenic alopecia) in women. It comes in the form of serums, tretinoin creams, and lotions.

5. Corticosteroids

Women who experience hair thinning/hair loss because of alopecia areata (patchy hair loss triggered by immune system attacks on the hair follicles) may consider treatment with corticosteroids (immune system suppressors) injected at several sites in the impacted areas. Improvement in hair health is visible in 4 weeks.

6. Iron supplement

Iron deficiency (medically known as anemia) is the cause of hair thinning and hair loss in some women. Such women who experience anemia should consult their doctor. The doctor will prescribe iron supplements which will fix the low iron in the body issue.  The supplement will help in stopping hair loss.

7. Anthralin

In women, anthralin has been reported to have an immunomodulating effect on alopecia areata (patchy hair loss). It can be applied to the scalp at home, and then the scalp should be washed with cool water and mild shampoo.

Anthralin encourages hair regrowth, and new hair strands may sprout up in 2-3 months after using it.

8. Takeaway

Hair thinning in women can be treated with lifestyle modifications. Nutritious food, workout, yoga, and good sleep can address hair loss and hair thinning, depending on the cause.

How to Prevent Thinning Hair in Women

  • Consider changing your lifestyle and have protein-rich and hair-friendly foods. Reduce sugar and processed foods, trans fat, and foods containing preservatives and artificial flavors.
  • Quit smoking and avoid heavy alcohol consumption
  • Exercise more to reduce stress, sleep well and do a little bit of yoga for emotional and physical well-being
  • Women who experience hair thinning/hair fall due to thyroid disorders should consult their GP. The doctor will prescribe thyroid medication to address the issue and bring the thyroid hormone back to normal. Once the prescribed medicines start working, the hair will start regrowing.
  • Eat an iron-rich diet that includes chicken—lean red meat, fish, leafy veggies, soy products, chia seeds, and lentils. If the iron levels in the body are normal, the hair will also remain healthy.
  • Never starve your body and ensure that you eat a good diet. A starving body may starve your hair too. If you want to lose excess weight, make changes in the foods you consume instead of eating less. Eat nutrient-dense foods and avoid processed and fat-rich foods.

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