Why do some people lose their hair?

Hair loss, also called alopecia, can have various causes. Here are some common reasons why people lose hair:

1. Genetics (Androgenetic Alopecia): One of the most common causes of hair loss in both men and women is genetics. Androgenetic alopecia, often referred to as male-pattern baldness or female-pattern baldness, is inherited from both parents. With this type of hair loss, hair follicles are sensitive to the hormone dihydrotestosterone (DHT), which shortens the growth cycle of hair, resulting in thinner and weaker strands until they eventually stop producing hair.

2. Age: As people age, hair growth naturally slows down, and hair follicles may start to shrink. This process is influenced by genetics, hormones, and overall health factors.

3. Hormonal Changes: Hormone imbalances, such as those caused by menopause, pregnancy, thyroid issues, or certain medications, can lead to temporary or permanent hair loss.

4. Medical Conditions: Certain medical conditions, including alopecia areata (an autoimmune disorder that attacks hair follicles), scalp infections (fungal or bacterial), skin disorders (like psoriasis or eczema), and autoimmune diseases (lupus, rheumatoid arthritis), can cause hair loss as a symptom.

5. Medications and Treatments: Some medications, such as chemotherapy, radiation therapy, and drugs for high blood pressure, cholesterol, or depression, can lead to hair loss as a side effect.

6. Stress: Severe or prolonged stress can temporarily affect hair growth and lead to increased shedding.

7. Nutritional Deficiencies: Lack of certain vitamins and minerals, including iron, vitamin D, vitamin B12, biotin, and protein, can contribute to hair loss.

8. Hairstyles and Hair Treatments: Tight hairstyles that put excessive tension on the hair, chemical hair treatments (like perming or coloring), and heat styling tools when used frequently and without proper care can cause damage and breakage, leading to hair loss.

It's important to consult with a doctor or a dermatologist if you experience significant or sudden hair loss to identify the underlying cause and determine appropriate treatment options.