26 Causes of Hair Loss You Should Know About

1. Genetics: The most common cause of hair loss is genetics, known as androgenetic alopecia or male/female pattern baldness. This condition is hereditary and can affect both men and women.
2. Hormonal changes: Hormonal imbalances, such as those that occur during pregnancy, childbirth, menopause, or thyroid problems, can lead to temporary hair loss.
3. Nutritional deficiencies: A lack of essential nutrients, such as iron, zinc, vitamin D, and biotin, can contribute to hair loss. Poor diet or restrictive eating habits can cause these deficiencies.
4. Medical conditions: Certain medical conditions, such as alopecia areata, scalp infections, trichotillomania (hair-pulling disorder), and autoimmune diseases, can result in hair loss.
5. Medications and treatments: Some medications, including those used for cancer, arthritis, depression, heart problems, and high blood pressure, may cause hair loss as a side effect. Additionally, treatments like chemotherapy and radiation therapy can lead to significant hair loss.
6. Stress and trauma: Physical or emotional stress can trigger hair loss. This type of hair loss is known as telogen effluvium and is usually temporary. Traumatic events like surgery, a severe illness, or a sudden loss can also cause hair to shed excessively.
7. Hairstyling and treatments: Excessive hairstyling practices, such as tight braids, ponytails, or the use of hot styling tools, can damage the hair shaft and lead to hair breakage or traction alopecia.
8. Age: Hair naturally thins and becomes finer as we age. This type of hair loss is known as involutional alopecia and is a normal part of the aging process.
9. Chemical exposure: Exposure to certain chemicals, such as harsh hair dyes, relaxers, or chemical treatments, can damage the hair follicles and cause hair loss.

10. Scalp conditions: Certain scalp conditions like seborrheic dermatitis, scalp psoriasis, or fungal infections can lead to hair loss. These conditions can cause inflammation and disrupt the normal hair growth cycle.
11. Excessive hairstyling products: Regular use of harsh hairstyling products like gels, mousses, hairsprays, or excessive use of dry shampoos can build up on the scalp and clog hair follicles, resulting in hair loss.
12. Overactive immune system: Some individuals may experience hair loss due to an overactive immune system that mistakenly attacks the hair follicles. This condition is known as autoimmune alopecia or alopecia areata.
13. Hormonal disorders: Disorders like polycystic ovary syndrome (PCOS) can cause hormonal imbalances, leading to hair thinning and excessive hair shedding.
14. Radiation therapy: Undergoing radiation therapy as a part of cancer treatment can cause hair loss in the treated area. The extent of hair loss depends on the dosage and area being treated.
15. Sudden weight loss: Rapid and significant weight loss, often associated with crash diets or eating disorders, can disrupt the normal hair growth cycle and lead to temporary hair loss.
16. Chronic illnesses: Certain chronic illnesses, such as diabetes, lupus, or kidney disease, can contribute to hair loss due to the impact they have on overall health and nutrient absorption.
17. Iron deficiency anemia: Anemia, particularly iron deficiency anemia, can cause hair loss. Iron is essential for healthy hair growth, and a deficiency can result in weakened hair follicles.
18. Environmental factors: Exposure to environmental factors like pollution, harsh sunlight, or chlorine in swimming pools can damage the hair and contribute to hair loss.Trichotillomania: Trichotillomania is a psychological disorder characterized by the irresistible urge to pull out one’s hair, including scalp hair, eyebrows, or eyelashes. This can lead to significant hair loss in affected areas.

19. Prescription medications: Certain medications, such as anticoagulants, beta-blockers, anticonvulsants, and some antidepressants, can have hair loss as a side effect.
20. Hormonal changes in women: Hormonal fluctuations during childbirth, postpartum, or while entering menopause can contribute to hair loss in women.
21. Tinea capitis: Tinea capitis, also known as scalp ringworm, is a fungal infection that can cause hair loss in patches on the scalp. It is more common in children but can also affect adults.
22. Chemotherapy drugs: While mentioned earlier, it’s worth noting that chemotherapy drugs used in cancer treatment are notorious for causing hair loss. This is because these drugs target rapidly dividing cells, including hair follicles.
23. Radiation exposure: Exposure to high levels of radiation, such as during nuclear accidents, can cause temporary or permanent hair loss, depending on the dosage and duration of exposure.
24. Poor hair care practices: Rough handling of hair, excessive brushing or combing, using harsh hair care products, or frequent heat styling without proper protection can damage the hair shaft and contribute to hair loss.
25. Scalp trauma: Physical trauma to the scalp, such as from accidents or surgery, can lead to localized hair loss in the affected area.
26. Certain autoimmune diseases: Autoimmune diseases like lupus, Hashimoto’s thyroiditis, or scleroderma can cause hair loss as a result of the immune system attacking the hair follicles.

It’s important to note that some causes of hair loss are temporary and can be reversed with appropriate treatment or lifestyle changes. However, in certain cases, hair loss may be permanent. If you are experiencing significant hair loss or are concerned about it, it’s best to consult with a healthcare professional or a dermatologist for a proper diagnosis and guidance on treatment options.