Kourtney Kardashian Barker wants people to get off the sugar roller coaster. Her supplement brand, Lemme, is launching a new formula that is said to promote healthy blood sugar, boost carbohydrate and glucose metabolism, and reduce cravings. Lemme Curb ($40) contains Chromax, a form of chromium, a mineral which is thought to boost metabolism, according to the Cleveland Clinic. The formula also features wild bitter melon, thought to promote healthy blood sugar levels; cinnamon, known to reduce...