The human body does not process hunger the same way throughout the day. Research suggests that appetite hormones shift during the evening, often increasing cravings for calorie-dense foods. Ghrelin, the hormone that stimulates hunger, can remain elevated when meals are skipped, sleep is poor, or stress levels stay high.
A study by the National Institutes of Health found that late-night eating is associated with altered metabolism and increased fat storage because the body burns energy less efficiently at night.
Dr Ameet Soni, Associate Vice President and Head of Medical Affairs, CORONA Remedies, said, “Late-night cravings are often not simply a matter of willpower, but can be influenced by underlying physiological factors. One key reason is fluctuations in blood sugar levels. When blood glucose drops, particularly after long gaps between meals, the body signals a need for quick energy, often leading to cravings for sugary or high-carbohydrate foods. Conversely, persistently elevated blood sugar levels can also disrupt hunger regulation over time.”
The brain also seeks quick comfort in the evening because mental exhaustion builds up through the day. After work pressure, screen exposure, commuting, or emotional stress, the brain starts searching for an easy dopamine release. Sugary and processed foods provide that temporary reward.
“Most people think cravings are purely psychological, but many late-night cravings are actually biological responses to irregular eating patterns, poor sleep, and stress-related hormonal shifts,” says the doctor.
That is why someone may feel completely in control during breakfast and lunch, but suddenly lose restraint late at night.
