Common Questions with eating one meal a day (Omad) Is Eating One Meal a Day Bad for You? A study conducted by the National Institute of Aging concluded eating one meal a day rather than three, decreases your insulin resistance and helps your glucose intolerance. These are both features that are related to type 2 diabetes. Intermittent fasting forms such as omad, enhance hormone function to facilitate weight loss. Lower insulin levels, higher growth hormone levels and increased amounts of norepinephrine all increase the breakdown of body fat and facilitate its use for ...