A cardiologist by training, Dr. Alejandro Junger is a trailblazer in functional medicine and the founder of the Clean program. He’s also goop’s OG expert M.D. and our constant guide through new paths of healing. One of the most powerful tools he uses to restore health is detoxification. Detox has become a hotly debated topic, but Junger says it’s not a modern concept, nor a fad, nor a method of deprivation. It’s a way, he believes, of removing blocks and filling in gaps so the body can recover its innate ability to heal itself.