Eating is something we do every day, and its connection to our weight is undeniable. Most of us concentrate on what we eat, and rightly so, because the nutritional value and calorie content of food directly impact our weight. Yet, an increasingly important factor in weight management is when we eat. Nutritionist Pooja Makhija explains the science behind having early dinners, particularly in the evening, and how this aligns with the body clock to support overall weight management. In an Instagram video, she writes in the caption, “You don't start digesting worse at night because of the food… you digest worse because melatonin has already risen,” adding, “Melatonin climbs 2–3 hours before your bedtime, dropping your insulin sensitivity by up to 50% and switching fat cells into storage mode. So the same meal hits very differently at 7 pm vs 10 pm.”What Is Melatonin?Melatonin is a hormone made by the pineal gland in the brain that helps control the body’s sleep-wake cycle. Its levels usually rise in the evening, peak during the night, and fall in the early morning. Many doctors even recommend melatonin supplements to help regulate sleep patterns, though they can sometimes cause side effects, so consulting a physician is advised, as per Healthline.How Does Melatonin Affect Your Fat Storage In Body?In her video, Pooja grabs attention by asking, “We all know that melatonin makes you sleepy. But what if I told you that melatonin wakes up your fat cells and makes them store more? Hadn't heard of that?”She continues, “Melatonin isn’t just your sleep hormone. It’s your body’s night mode switch. As it rises in the evening, your metabolism slows down. Insulin sensitivity drops 25 to 50 percent, glucose clearance slows, and your fat cells switch from burning energy to storing it.” Referring to a study published in the *Clinical Endocrinology and Metabolism* journal, she adds, “People who ate dinner when their melatonin was high had a 34 percent higher glucose spike. Same people, same meal, same calories—just bad timing.”What Is Front Loading Calories?Front-loading calories is a way of eating where most of your daily calories are consumed earlier in the day, with a big breakfast and hearty lunch and a lighter dinner in the evening. This approach matches your meals with your body’s natural circadian rhythms, improving metabolism, insulin response, and appetite control. It helps with weight management and energy levels by taking advantage of the morning metabolism, reducing late-night cravings, and supporting better sleep.What Is The Correct Time To Have Dinner To Prevent Fat Storage And Weight Gain?Pooja Makhija says the most effective method to prevent melatonin from triggering fat storage is to eat early dinners and front-load calories during the day.“So when most of your calories land late at night, it’s at a time when your biology is saying, ‘I’m done for the day; I’m not burning more.’ In contrast, front-loading calories with a big breakfast, solid lunch, and small dinner means you’re eating when melatonin is low. Your insulin is sharp, mitochondria are active, and your body is in daytime burning mode,” she explains.She concludes with a reminder: “Your fat cells have melatonin receptors, and they behave differently depending on the time of day. Front-loading isn’t a hack—it’s circadian biology. Melatonin guides your metabolism. So eat in tune with your body clock, not against it, and notice the difference.”According to Healthline, the ideal dinner time for better melatonin regulation and metabolism is 2–3 hours before bedtime—before your body naturally begins releasing melatonin—to avoid insulin spikes and fat storage.