Steel-cut oats swell in a bowl, and that modest thickening may shape the glucose response to lunch long after the spoon is down. The surprise is biochemical. Known as the second-meal effect, it shows that breakfast is not merely a morning event: its residue can alter how the body handles carbohydrate later.This is less a dietary trick than a timing system. Fiber buys time. Viscous fibers, includin...More