Section 1
The Mismatch Mechanism
Key Idea
Skin cancer risk is determined by a ratio between two factors: Incoming Energy (UV intensity from the sun) and Absorption Capacity (Melanin in the skin).
In Australia, the incoming UV energy is very high. If the population living there has naturally low melanin levels, their absorption capacity is overwhelmed. This mismatch implies that the natural shield is not strong enough to handle the environment's energy level.