Foods that keep you awake at night typically contain stimulants like caffeine (chocolate, coffee), trigger acid reflux (spicy, fatty, acidic foods like tomatoes), or cause blood sugar spikes (sugary treats, refined carbs), while alcohol disrupts sleep cycles, and water-rich items can lead to nighttime bathroom trips. To sleep better, limit stimulants, spicy dishes, heavy meals, and sugar before bed, as these interfere with your body's ability to relax and stay asleep.
Foods high in fat and sugar, such as cookies, cake and sweets can interrupt healthy sleep patterns, especially when eaten close to bedtime. The high saturated fat content of these treats can contribute to acid reflux which can keep people awake.
Stimulants, like coffee, cola beverages, spices, tea, and chocolate may also adversely affect sleep 23. Alcohol, one of the most powerful depressants, alters the circadian clock and worsens the quality of sleep 24. Spicy and hot foods are associated with insomnia 25.
Avoid foods heavy in sugar, caffeine, saturated fat, and processed carbs. These can interfere with your sleep patterns. Does consuming alcohol interfere with sleep? Yes, drinking can affect your sleep.
Top Ten Foods to Avoid for a Good Night's Sleep
The 3-2-1 bedtime method is a simple sleep hygiene strategy: stop eating 3 hours before bed, stop working 2 hours before bed, and stop using screens (phones, tablets, TVs) 1 hour before sleep, helping your body transition to rest by reducing stimulants and digestive load for better sleep quality. A more detailed version adds 10 hours (no caffeine) and 0 (no snoozing) for a 10-3-2-1-0 rule.
The 2-2-2 food rule is a simple guideline for leftover safety: get cooked food into the fridge within 2 hours, eat it within 2 days, or freeze it for up to 2 months to prevent bacteria growth, keeping it out of the temperature "danger zone" (40-140°F or 5-60°C).
Good sources: turkey, chicken, fish, eggs, cheese, edamame, peanuts, tofu, quinoa and pumpkin seeds. Melatonin, a hormone your body makes to help with your sleep cycle. It can also be found naturally in some foods.
Causes
High-carbohydrate foods: A high-carbohydrate meal is more likely to cause you to feel sleepy than a low-carbohydrate meal. Avoid foods and drinks that are high in processed sugars and starches—like sweets, juices, and white bread. These may cause your blood sugar to rise quickly, increasing your risk of tiredness.
Experts generally apply the "30-30 rule": It's insomnia if it takes you 30 minutes or more to fall asleep or if you're awake for 30 or more minutes during the night—at least three times a week. No matter how little you sleep, it isn't insomnia unless your nighttime habits drag you down during the day.
Here are nine of the worst foods to eat and drinks that you should avoid before getting tucked in for the night.
Cardiologists generally advise avoiding processed meats, sugary drinks and sweets, and foods high in trans fats and sodium, like most fried foods and salty snacks, because they raise bad cholesterol, blood pressure, and inflammation, significantly increasing heart disease risk. Focusing on whole foods and limiting these culprits is key for heart health.
Eggs and fish are higher melatonin-containing food groups in animal foods, whereas in plant foods, nuts are with the highest content of melatonin. Some kinds of mushrooms, cereals and germinated legumes or seeds are also good dietary sources of melatonin.
Quick fixes to improve deep sleep:
A peanut butter and jelly sandwich (PB&J) adds about 33 minutes to your healthy lifespan per serving, according to a University of Michigan study that measured life expectancy impacts of over 5,850 foods using the Health Nutritional Index (HNI). This sandwich tops the list for adding time, with nuts and seeds also being highly beneficial (around 25 mins) and processed items like hot dogs subtracting time.
The 3-3-3 rule for sleep is a technique to help manage anxiety and improve sleep quality. It involves focusing on three things you can see, three things you can hear, and moving three parts of your body.
Stimulants like caffeine, high-sugar snacks, or heavy meals before bedtime can disrupt your natural sleep cycle, while certain nutrient-rich foods can support melatonin production and regulate your circadian rhythm.
Women are twice as likely to experience insomnia as men. Older adults are more likely to experience insomnia.
The 3-2-1 sleep rule is a simple wind-down routine: stop eating and drinking alcohol 3 hours before bed, stop working/mentally stimulating activities 2 hours before, and turn off screens (phones, TVs) 1 hour before sleep, helping you transition to rest by reducing stimulants and preparing your mind and body. It's often part of a larger 10-3-2-1-0 rule, which also adds no caffeine 10 hours prior and no hitting snooze (0) in the morning.
For better sleep: Eat complex carbohydrates such as whole-wheat toast or a bowl of oatmeal before bed. These foods will trigger the release of the sleepy hormone serotonin, and they don't take long to digest.
For better sleep, Piedmont Healthcare encourages you to avoid late-night heavy meals, alcohol, caffeine, and acidic/spicy foods. Eat dinner a few hours before bed and maintain a healthy weight. Your diet affects more than your waistline.
Once you have your first meal, depending on its content and balance, it's recommended to have each subsequent meal every three to four hours to prevent dips in blood sugar levels (which can lead to feeling hangry). Meals should include a protein-rich food, high-fiber starches, vegetables, fruits, and fat.
Food held between 5oC and 60oC for less than 2 hours can be used, sold or put back in the refrigerator to use later. Food held between 5oC and 60oC for 2-4 hours can still be used or sold, but can't be put back in the fridge. Food held between 5oC and 60oC for 4 hours or more must be thrown away.