Here Are 8 Things that Happen to Your Body If You Skip Breakfast

Who needs cereal, eggs, and bacon in the a.m. when your tummy doesn't even rumble till near lunchtime? You'd be surprised.

You have a greater risk of heart disease

iStock/sanjagrujic

Some 31 million Americans are breakfast skippers, studies show. Some are trying to cut calories, some are too busy during the morning rush, and others say they just don't feel hungry. But despite some reports, the research overwhelmingly shows that eating a good breakfast is an important part of a healthy lifestyle. A study from Harvard University found that men who skipped breakfast had a 27 percent greater risk of heart attack or heart disease than those who dug in. Although they haven't pinpointed a direct cause, researchers suspect that remaining in a fasting state for longer is stressful and makes the body work harder, causing metabolic changes. "The changes in hormones to help maintain blood sugar levels and the trend toward weight gain in patients who skip breakfast has been linked to heart disease," says Christian J. Gastelum, MD, an endocrinologist at PIH Health in Whittier, California. These changes lead to plaque buildup in the arteries, upping your chances of heart problems.

You're more likely to get diabetes

iStock/amr-image

Skipping that bowl of oatmeal or yogurt parfait could mess with your blood sugar. Another Harvard study found that women who regularly didn't eat breakfast had a 20 percent increased risk of developing type 2 diabetes. "Skipping the morning meal is linked with impaired glucose tolerance and that is further associated with the development of prediabetes and diabetes," Dr. Gastelum says. The theory is the irregular blood sugar spikes that occur when we fast for a long time and then eat a lot because we're hungry put a strain on the body, which can lead to insulin resistance. If you have diabetes, here are some breakfast rules diabetics should follow.

You may gain weight

iStock/aj_watt

If you're trying to lose weight, it would seem that the less you eat, the more pounds you'd drop, right? But that's not exactly the case. Although research is mixed on whether eating breakfast has a direct effect on weight loss, the link between skipping breakfast and weight gain has been shown. "One theory is that people who eat breakfast are more likely to practice lifestyle behaviors associated with an ideal body weight and good health," says Shannon R. Weston, MPH, a certified diabetes educator at UTHealth School of Nursing in Houston. "Another theory is that people who skip breakfast tend to overeat at subsequent meals, consuming the majority of calories during the most sedentary hours of the day." Dr. Gastelum says that some of his patients don't realize they take in more calories in one sitting than in three planned meals. "Patients who frequently skip meals believing that they are eating less or consuming fewer calories are often wrong," he says. "They tend to have a rubber band effect on their calorie intake—they skip breakfast and then overeat at lunch." Did you know eating late at night can cause weight gain?

Your metabolism may slow down

iStock/champja

When you skip meals, your body stops working as fast in order to conserve fuel. "The body will slow its basal metabolic rate to compensate for calorie restriction," Dr. Gastelum says. Plus, in the morning your metabolism has already been slow during sleep. "Prolonged fasting will further reduce the body's willingness to burn calories and impact the amount of adipose [fat] tissue that's lost." Although the results of recent study dispute this thinking, the same research also showed more calories burned during morning exercise, as well as more stable blood sugar later in the day, when the participants ate breakfast. So, the morning meal does seem to have an impact on the body's metabolic processes. Find out more causes of a slow metabolism.

Content continues below ad

You may get stupid

iStock/hoozone

Not eating breakfast can have an effect on brain health as well. Because your noggin runs on glucose, the drop in blood sugar from a long fasting state can affect your cognitive function. "Skipping breakfast is a missed opportunity to provide adequate nutrients to the brain, especially after an overnight fast," Weston says. Studies have shown that school children do better on tests when they've had breakfast. "Because dietary carbohydrate breaks down into glucose, it is important to get the right amount of carbohydrates for breakfast to optimize cognitive focus and memory," she says. But don't go reaching for sugary pastries—choose complex carbs like whole grains, plus protein like eggs, and healthy fat like avocado. Try some of these high-protein breakfast ideas.

You'll get "hangry"

iStock/AnaBGD

When you're hungry, you're also apt to get angry more easily, and so avoiding your morning meal may make you grumpy. This is especially true if you're skipping breakfast because you're in a rush, and not because you truly don't feel like eating. One study from the U.K. showed that men who had eaten breakfast had a more positive mood at the start of the test session, and felt calmer afterward, than those who hadn't eaten breakfast. Weston says the drop in blood sugar caused by skipping a meal causes irritability, along with fatigue and headache that can further worsen your mood. "Serotonin and dopamine, also known as neurotransmitters, are chemicals produced in the brain to regulate feelings and mood," Weston says. "There is a connection between food intake and the balance of neurotransmitters produced by the brain. Skipping meals puts stress on the body and stress affects dopamine and serotonin levels." On the flip side, eating regularly supports happy feelings. Here are some of the best foods to eat when you're hangry.

Your energy will dip

iStock/geber86

Another reason skipping breakfast is linked to weight gain is that you have less energy for working out. If you're feeling sluggish, you're not going to want to hit the gym—and if you do, you may poop out in the middle of your session. Plus, once you finish a morning workout you'll need to eat to refuel—so to get through the morning with a workout and no breakfast will leave you extra drained. According to information from the University of Wisconsin, breakfast should give you 25 percent of your daily energy, including high fiber and protein for fuel. If you don't have time to cook eggs or make oatmeal, try a quick protein shake. These breakfast bowls are super-energizing.

You'll have more cravings later

iStock/kontrec

A protein-packed start can help manage your appetite throughout the day. "Studies have shown that eating a breakfast with a substantial amount of protein (around 20 grams) has an impact on nutritional choices the rest of the day," Weston says. "Because dietary protein suppresses appetite and provides satiety between meals, people who eat a high-protein breakfast tend to eat fewer calories overall during the day compared to people who eat a high-carbohydrate breakfast." In general, we make worse food choices when we're hungry, so feeling satisfied after breakfast can put you on the right track. But, if you are truly not hungry in the morning, it's OK to listen to your body. Instead, "try eating something light, such as a piece of fruit with nut butter or no sugar-added yogurt," Weston says. Try these food hacks for a healthier breakfast.

Content continues below ad

View as Slideshow

Want to stay smart and healthy?

how we use your e-mail
We will use your email address to send you this newsletter. For more information please read our privacy policy.