Hair loss (thinning) affects many women as well as men. Women usually experience thinning hair without going bald, and various underlying causes can exist. Treatment can stabilize or even reverse hair loss in many cases. Cosmetic approaches can help when treatment is not possible.

 3 Stages to understanding hair loss.

Hair loss (thinning) is normal and occurs in three stages:

1. Anagen stage: hair grows actively for two to eight years.
2. Catagen stage: hair stops growing and prepares to shed for up to three weeks.
3. Telogen stage: hair is expelled from the follicle and sheds, then the follicle remains dormant for around three months before a new hair sprouts.

 Hair loss is individual. Most people know how much hair they lose. An increase in hair loss, patches, or thinning may signal a problem, says Dr. Deborah Scott, assistant professor of dermatology at Harvard Medical School and co-director of the Hair Loss Clinic at Brigham and Women's Hospital.

 3 Reasons for hair loss (thinning) in women.

1. Hair loss in women can be caused by external factors like medication or  tight hairstyles or internal factors like hormonal changes or medical conditions.

2. Hair loss can also be genetic, commonly known as female-pattern hair loss. It causes a widening part on the top of the head in women in their 40s or 50s. Hormonal shifts during menopause can also contribute to it.

3. Hair loss in women may be caused by scalp inflammation, eczema, psoriasis, frontal fibrosing alopecia, overuse of harmful hair products/tools, underlying illnesses, autoimmune conditions like lupus, nutritional deficiencies, or hormonal imbalances.

 Full Article: https://www.health.harvard.edu/blog/thinning-hair-in-women-why-it-happens-and-what-helps-2020032719267

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