Causes of Hair Loss and Developments in Hair Rejuvenation

The 2002 document outlines the psychological effects of hair loss and the treatments available at that time. It states that by age 50, up to 50% of men experience genetic hair loss, with initial treatments like minoxidil being disappointing. However, finasteride and a dual type I and II 5α-reductase inhibitor showed significant improvements, with the latter resulting in hair regrowth in 90% of treated individuals. For women, hair loss before age 50 is primarily nutritional, affecting 30%, with iron and L-lysine deficiencies being key factors. Treatments for women's genetic hair loss included oral estrogen, cyproterone acetate, and spironolactone, with the former two being more effective. The document concludes that while some hair loss can be treated, particularly nutritionally induced loss in women, there remain untreatable conditions that impact quality of life.