LibGuides: L3Y2 Tutorial 2022 - critical thinking: Claim 5: Caffeine reduces hair loss

The document discusses androgenetic alopecia, a hereditary hair loss condition affecting 80% of men experiencing hair loss. This condition is not a disease but a genetic predisposition, and it cannot be cured but must be continuously prevented. The document explains that the testosterone surplus, which begins during puberty, can weaken predisposed hair roots in the scalp. These roots react hypersensitively to testosterone (DHT), which cuts their energy supply, shortens their growth phases, and ends their lifetime prematurely. This process is accelerated by the prevention of c-AMP generation, a messenger compound for energy required for hair roots' metabolism. The document also includes graphs showing the change in hair root activity over time, indicating that using Alpecin shampoo can prolong the activity of hair roots.