Alexander Wunsch is physician, researcher and teacher in light medicine and photobiology with particular interest in light effects and beneficial / adverse health impacts of solar radiation and artificial light sources on endocrine and cellular levels in humans. In his medical office in Heidelberg he develops and applies therapeutic light spectra in combination with other biophysically based treatments. He also presents at international conferences and acts as a consultant for federal authorities and the lighting industry. On this episode of Bulletproof Radio, Dave gets Alexander's expert opinion on light medicine, LED lights, computer color temperatures, how to put color in our environment and more! Enjoy the show!