I'm putting together a list of supplements I take. Below is the list so far. Vitamin D Vitamin D acts on over 1,000 different genes and serves as a substrate for sex hormones like testosterone, human growth hormone, and estrogen. It moderates immune function and inflammation. It assists in calcium metabolism and bone formation. It’s no coincidence this is one of the few vitamins humans can make on their own, with a little bit of sunshine. Without it – we’d be dead. It’s true