The Science Behind the 'One Meal a Day' Diet: Risks and Rewards

The "one meal a day" diet (OMAD) has gained popularity among celebrities, but there is limited scientific evidence on its effects. While intermittent fasting and time-restricted eating have shown some health benefits, the impact of OMAD remains unclear. A study found that participants who ate one meal a day experienced weight and fat loss, but also reductions in lean mass and bone density. Animal studies have shown conflicting results. Meeting nutritional requirements can be challenging with OMAD, potentially leading to muscle loss, constipation, and poor gut health. This diet is not recommended for children, pregnant or breastfeeding individuals, or those at risk of eating disorders. For most people, OMAD may be unsustainable and potentially harmful in the long run.