Kris Sweeting, the creator of EMR Tek, overcame vitiligo using light therapy and is a pioneer in UV light treatment. He discusses how artificial tanning beds are harmful and the importance of mixing visible light for safety. Kris elaborates on the differences in UV wavelengths and the concept of melanogenesis. The chat also covers the benefits of light exposure for vitamin D levels, and the intricate relationship between UV therapy and holistic health outcomes, especially considering skin types and geographical challenges.