Hair loss is a common concern for both men and women, often caused by heredity. The most prevalent form, androgenic alopecia, also known as male-pattern baldness or female-pattern baldness, typically develops with age. This condition occurs in predictable patterns, such as receding hairlines and bald spots in men or thinning along the crown in women. The hormone dihydrotestosterone (DHT) plays a significant role in androgenic alopecia, causing hair follicles to shrink and eventually stop producing hair.

Other factors contributing to hair loss include stress, poor diet, hormonal changes, aging, medications, and medical conditions such as thyroid disease, lupus, anemia, low vitamin levels, protein deficiency, and polycystic ovary syndrome (PCOS).