Prep for colonoscopy usually involves a laxative beverage to clean you out before providers examine the bowels. Here’s what ...

Most adults should have a blood vitamin D level of at least 50 nanomoles per liter (nmol/L), according to the Office of Dietary Supplements ... with psoriasis take a daily 600 milligram vitamin ...

An upper GI endoscopy happens through the throat, while a lower GI colonoscopy involves entry through the anus. Find more ...