Eumelanin and pheomelanin, the two primary types of melanin, differ significantly in their ability to bind to various substances, including metals, minerals, and dopamine. This difference in chelation capacity plays a crucial role in melanin-based medicine, influencing the absorption and processing of essential nutrients and neurotransmitters. This significant difference contributes to the binding of chemicals that can be dangerous such as Tabacco, certain drugs, beliefs that are emotion specific, and unhealthy relationships to certain chemicals in processed foods.