6 Reasons Your Hair Stops Growing And Becomes Thin

Dr. Puneet Madan    08-01-2019 Consult

Who wouldn't want a gorgeous mane of long, thick hair? But sometimes it can seem like a herculean task to get your hair to grow out. Some among us also have to reckon with thinning hair or hair loss. If you've ever wondered why hair stops growing, I've got a few reasons listed below:

1. Alopecia Areata
Alopecia areata is an autoimmune condition where your immune system mistakenly attacks cells in your hair follicles, resulting in hair falling out in patches. In some cases, hair may even completely fall out (alopecia totalis). Medication or phototherapy may also be recommended by doctors to treat this condition.

2. Hereditary Pattern Baldness
Hereditary pattern baldness is considered to be the most common reason for hair loss. It's caused by a combination of the aging process, hormone levels, and genetics. In people with this condition, the normal hair growth cycle is altered due to the influence of the male hormone testosterone, resulting in thinner and shorter hair. In time, hair growth may stop completely in some parts of the scalp. In men, this results in the typical pattern of thinning hair at the top or a receding frontline while in women hair loss may be more diffused.

3. Thyroid Problems
Thyroid problems can also cause your hair to thin out. Your thyroid gland produces the hormone thyroid which regulates many activities, including your metabolism. Both insufficient thyroid hormones (hypothyroidism) and excessive thyroid hormones (hyperthyroidism) can affect hair growth and result in hair loss. 

4. Certain Medicines
Many medicines including birth control pills, calcium channel blockers, retinoids, beta-blockers, certain nonsteroidal anti-inflammatory drug (NSAIDs), certain antidepressants etc. can hamper hair growth and result in hair loss. If you find that your hair is thinning out after starting a new medicine, speak to your doctor to figure out if the medication could be causing it.

5. Nutritional Deficiencies In Iron, Protein, Zinc, Or Biotin
Nutritional deficiencies can also hamper hair growth. If you have an iron deficiency, you may also experience symptoms such as brittle nails, cracks at the corners of the mouth, fatigue, shortness of breath, and cold hands and feet. A deficiency of zinc, biotin, or protein may also lead to hair loss too. These deficiencies are usually seen in people who are on restrictive diets or have some medical problems which lead to malabsorption of nutrients.

6. Scalp Infections
Fungal infections of the scalp can cause hair to break off at the surface of the scalp and result in patchy hair loss. You may also have itchy, swollen, and reddened areas on the scalp if you have a fungal infection. This can be treated with antifungal medication.


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