One-Meal‑A‑Day and Late‑Night Eating Linked to Weight‑Loss Difficulties

Eating only once a day, known as OMAD, often fails to produce weight loss because hidden calories in a single large meal or drinks can offset any deficit. Metabolic adaptation may lower basal metabolism, and insufficient protein can cause muscle loss, making the method unsuitable for many, especially beginners and athletes. Tracking calories for several days is recommended to reveal excess intake.

Similarly, consuming a heavy meal or snack late in the evening can increase obesity risk. Digestion slows during sleep, leading to poorer nutrient processing and disrupted sleep. Health guidelines advise a balanced, light dinner several hours before bed, featuring vegetables, lean proteins, and whole‑grain carbs, and suggest a brief walk after eating. Small, low‑calorie snacks like an apple or nuts are preferred if hunger strikes later.