Feeling tired after eating is a common experience often caused by factors like the type and amount of food consumed, the digestion process, and hormonal changes. Meals high in fats and carbohydrates, especially refined carbs, can lead to a feeling of sluggishness because these foods take more energy to digest and cause fluctuations in blood sugar levels. Hormones like cholecystokinin, serotonin, and sometimes melatonin (influenced indirectly by food) can promote a sense of sleepiness. Eating large portions can divert energy to digestion, leaving less energy for other activities, which contributes to fatigue. Additionally, eating irregularly or late can disrupt the body's internal clock, leading to tiredness after meals. Some underlying health conditions like diabetes or food intolerances might also cause excessive tiredness after eating. Adjusting meal composition to include more protein and vegetables, eating smaller portions, chewing well, and not drinking too much water during meals can help reduce this fatigue sensation.