Here’s why experts suggest rethinking this bedtime snack.
Reviewed by Dietitian Jane Leverich, M.S., RDN
Key Points
- Avoid baked goods at night; they can spike blood sugar and disrupt sleep and energy levels.
- Pair carbs with protein or healthy fats to stabilize blood sugar and support restful sleep.
- Eating earlier and fostering good sleep habits can improve blood sugar and overall health.
Many Americans report reaching for a late-night snack. If you’re among them, you’re in good company. Whether you’re hungry after an active day, didn’t have time to eat enough earlier or simply want a little something to help you unwind, an evening snack can have a place in your routine. But what you choose may affect your blood sugar, sleep and energy levels the next day.
For people without diabetes or prediabetes, the body generally does a good job of regulating blood sugar after eating a variety of foods at any time of day. However, some snacks may be less satisfying than others, and the timing and composition of your meals can influence blood sugar responses.
So, what should you reach for when you’re looking for a nighttime snack? Experts suggest thinking twice before making baked goods like muffins, cookies and brownies your regular evening snack of choice. Read on to learn why, plus satisfying alternatives and other ways to support healthy blood sugar levels.
Why Baked Goods May Not Be the Best Late-Night Snack for Blood Sugar
They Can Cause a Quicker Rise in Blood Sugar
Roller coaster rides should be reserved for theme parks, not your blood sugar. Baked goods like cookies, cakes and brownies often contain refined flour and added sugar, so experts recommend avoiding them before bed since they lack the staying power to support balanced blood sugar levels throughout the night.
Erin Palinski-Wade, RD, CDCES, shares, “Cookies, cakes and other baked goods aren’t the best choice before bed, especially if you’re trying to manage blood sugar. Most baked goods contain refined flour, which has had much of its fiber removed, so it breaks down quickly in the body. Add in the sugar, and you have a combination that can cause a rapid rise in blood sugar, especially if these foods are eaten alone and not in combination with a source of lean protein or healthy fat.”
That doesn’t mean you need to give up your favorite dessert. But if you’re regularly hungry before bed, a snack that includes nutrients such as protein and fiber may be more satisfying and support balanced blood sugar levels throughout the night.
Your Body May Respond Differently to Carbohydrates Later in the Day
Imagine you’ve finally put away the pile of laundry that’s been haunting you all week and settled in to watch your favorite show. Then your child walks in with another basket full of clothes that have been piling up on their bedroom floor. Oof! Just as you might be tempted to leave that extra load until morning, your body’s response to food can vary depending on the time of day.
Research suggests that insulin sensitivity, or how effectively your cells respond to insulin, follows a daily rhythm and may be lower in the evening than in the morning. This means the same meal can produce a different blood sugar response depending on when you eat it.
Farhan Abdullah, DO, explains, “Human insulin sensitivity naturally declines during the evening hours, making it significantly harder for the body to efficiently clear this sudden influx of glucose before sleep.” Palinski-Wade agrees, “It’s not just what you eat, but when you eat it that matters. Eating later can lead to higher blood sugar levels even when you’re eating the exact same foods and calories.” Some research has found that eating later is associated with less favorable blood sugar responses.
Baked Goods May Be Less Filling Than Other Options
Many baked goods contain a combination of refined flour, added sugar and fat. While fat can slow digestion and affect how quickly carbohydrates are absorbed, it doesn’t automatically make a snack more supportive of blood sugar management. The amount and type of fat, along with the food’s overall nutrient composition, matter.
Palinski-Wade notes that some baked goods contain saturated fats, which may be less beneficial for metabolic health when consumed in excess. That said, the fat content varies considerably from one baked product to another, so it’s important to check nutrition labels.
Blood Sugar–Friendly Late-Night Snacks
Not everyone needs a bedtime snack, says Palinski-Wade. “If you’re not hungry, there’s no reason to force yourself to eat. In fact, research shows skipping a bedtime snack can often work just as well, or even better, for blood sugar management.” The exception: If you take insulin or certain diabetes medications that increase your risk of low blood sugar overnight, a bedtime snack may be part of your management plan. Talk with your health care provider about what’s right for you.
If an evening snack sounds good, consider these blood sugar–friendly pairings.
- Unsweetened Greek-style yogurt with nuts or seeds. Abdullah shares, “An excellent late-night option is unsweetened Greek yogurt paired with a handful of almonds, which provides a combination of slow-digesting protein and healthy fats.” Cottage cheese is another option that provides protein.
- Hard-boiled egg with sliced cucumbers. Another favorite of Abdullah’s is pairing a nonstarchy vegetable with an egg. This combination provides protein and fiber without a lot of added sugar.
- Fruit with nut butter. Pamela Nisevich Bede, MS, RD, CSSD, LD, recommends this combination, which pairs a fiber-rich carbohydrate, like fruit, with fat and protein. Apples and pears work well, or try frozen berries with a tablespoon of melted nut butter for a dessert-like snack.
Other Tips to Support Blood Sugar
Supporting healthy blood sugar doesn’t require overhauling your entire lifestyle. A few everyday habits can help support your energy, sleep and overall health.
- Pair carbohydrates with other nutrients. Abdullah recommends including fiber, healthy fats or protein alongside carbohydrate-rich foods. These nutrients can slow digestion and influence how quickly glucose enters the bloodstream.
- Prioritize movement. Walking, dancing, cycling and other activities all count. Even household chores, like gardening, cleaning and folding laundry, add up. Regular physical activity supports insulin sensitivity, and a walk after meals can be one simple way to incorporate more movement into your day.
- Consider your meal timing. In the habit of eating late? It may be worth experimenting with an earlier dinner if it works with your schedule. Palinski-Wade explains, “Your body is naturally better equipped to manage carbohydrates earlier in the day. In one study, people with type 2 diabetes who regularly ate late and shifted dinner earlier saw their fasting blood sugar levels improve the next morning. They also improved their insulin resistance.”
- Prioritize quality sleep. A night of poor sleep can affect hormones involved in appetite and blood sugar regulation, notes Palinski-Wade. She encourages people to prioritize a consistent sleep and wake time. Eating a balanced diet that includes sources of tryptophan, such as turkey; melatonin, such as tart cherries; and magnesium, such as nuts and seeds, can also help support overall health.
- Find a nighttime eating routine that works for you. If eating right before bed causes discomfort or interferes with your sleep, try having your evening snack a little earlier. But there’s no universal rule that everyone needs to stop eating a certain number of hours before bedtime. Pay attention to your hunger, schedule and how you feel.
Our Expert Take
The foods you eat can impact your blood sugar, including the snacks you choose late at night. While an occasional post-dinner dessert isn’t going to drastically change your blood sugar management long-term, routinely reaching for baked goods, like cookies, muffins and brownies, as your bedtime snack may impact blood sugar. If you’re hungry in the evening, experts recommend opting for a balanced snack, such as Greek-style yogurt with nuts, a hard-boiled egg with cucumbers, or an apple with nut butter. The key is to find an eating pattern that works for your needs and supports your overall health. If you have diabetes or concerns about your blood sugar, a registered dietitian or other health care provider can help you determine what makes sense for you.