Think twice before skipping breakfast. Here’s why (and when) you should break your fast.
Reviewed by Dietitian Jane Leverich, M.S., RDN
Key Points
- Insulin resistance is common–it affects about one in four adults worldwide.
- Dietitians agree that eating breakfast within one to two hours of waking is best.
- Consistently eating breakfast within one to two hours of waking can create meaningful change.
Insulin resistance affects about one in four adults worldwide, making it likely that you–or someone you know–has experienced it. Often without noticeable symptoms, insulin resistance develops when the body’s cells become less responsive to insulin, making it harder for glucose to move from the bloodstream into cells. Over time, this can lead to elevated blood sugar levels and increase the risk of developing prediabetes.
On the bright side, insulin resistance can often be improved through lifestyle changes. Along with focusing on a balanced diet and regular physical activity, how you start your day may matter too–particularly when you eat your first meal. In fact, registered dietitians say that eating breakfast within one to two hours of waking may help support better blood sugar regulation and insulin sensitivity. Here’s why.
Why 1 to 2 Hours After Waking Is the Best Time
Helps Your Body Process Glucose More Efficiently
You may feel a bit sluggish in the morning, but your body’s internal systems are already getting to work. Erin Palinski-Wade, RD, CDCES explains, “Research shows that insulin sensitivity is naturally highest in the morning due to circadian biology, meaning your body is primed to process glucose more efficiently early in the day. Eating breakfast early is beneficial because your pancreas, liver and muscles all follow an internal circadian clock that peaks in insulin efficiency during morning hours, so the same meal eaten at 7 a.m. produces a smaller blood sugar spike than the same meal eaten at noon or later.”,
But the key isn’t eating breakfast at 7 a.m.–or whatever time falls within one to two hours of waking for you–once a week. It’s about consistency and helping align your eating patterns with your body’s internal rhythms. Palinski-Wade shares, “Irregular or late breakfast timing disrupts this system, leading to blood sugar instability throughout the day.”,
Supports Healthy Daily Habits
Healthy habits play an important role in supporting long-term health, and one habit that may help set the tone for the day is eating a balanced breakfast. “Eating breakfast earlier can help support a steadier appetite and energy throughout the day. Skipping breakfast or waiting too long to eat may leave some people overly hungry later, which can make it harder to choose balanced portions and blood-sugar-friendly meals,” shares Patricia Bannan, MS, RDN.
Additionally, research suggests that skipping breakfast may be associated with poorer dietary choices throughout the day, as well as decreased physical and mental well-being and poorer overall daily habits.
Provides Important Nutrients to Fuel Your Day
“Breakfast is a great opportunity to get protein, fiber and healthy fats early in the day. That combination helps slow digestion and supports a more gradual rise in blood sugar”, explains Bannan. In fact, research suggests that including protein alongside carbohydrates may help blunt post-meal blood glucose responses.
More broadly, additional research suggests that people who eat breakfast tend to have higher overall diet quality compared with those who skip it, and may also be more likely to maintain balanced eating patterns throughout the day.
If breakfast hasn’t been part of your routine, there’s no need to overhaul your habit overnight. Start slow and steady and build consistency over time. Bannan recommends simple options like Greek yogurt with berries or eggs with whole-wheat toast and avocado.
Promotes Healthy Digestion
Starting your day with breakfast doesn’t just support energy levels–it may also benefit digestive health. In fact, if you find yourself struggling to go No.2, it may be worth taking a closer look at how you start your day. Research suggests that people who skip breakfast may be more likely to experience constipation compared with those who eat breakfast regularly.
Plus, breakfast can be an easy opportunity to include dietary fiber, which supports healthy bowel movements. Foods commonly eaten at breakfast, like whole-grain cereals and fruits, can help contribute to the recommended 25 to 38 grams of fiber per day.
Other Breakfast Strategies to Help With Insulin Resistance
The timing of your breakfast may play a role in blood sugar management, but it isn’t the only factor to consider. Here are a few additional dietitian-recommended strategies that may help support insulin sensitivity:
- Eat a balanced breakfast. Pair carbohydrates with protein, fiber and healthy fats. Bannan shares, “This combination helps slow glucose absorption and can support steadier blood sugar.” Think oatmeal with nuts and seeds or whole-wheat toast with eggs, avocado and tomatoes.
- Choose higher-fiber carbohydrates. “Foods like oats, barley, beans, lentils, berries, vegetables and whole grains can be especially helpful because fiber slows the absorption of glucose and supports heart and gut health”, says Bannan. Consider options like shakshuka topped with chickpeas and avocado.
- Move your body after eating. Light movement after meals may help support blood sugar regulation. Research suggests that even a few minutes of gentle activity after eating may have beneficial effects on post-meal glucose levels. This could be as simple as tidying up the kitchen or taking a short walk.
Our Expert Take
Eating breakfast within one to two hours of waking may be the best time to support blood sugar regulation. Dietitians note that insulin sensitivity is highest in the morning, which may allow glucose to be processed more efficiently earlier in the day. Plus, eating earlier in the day may help support energy levels and reinforce other healthy habits that carry through the rest of the day. Bannan shares, “You don’t have to overhaul everything at once. Starting with one consistent habit, like a balanced breakfast within a couple of hours of waking, can create meaningful shifts over time.”
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