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5 Things That Happen to Your Body When You Skip Breakfast


S In the rush to get up and out the door each morning, for goodness sake, don’t skip breakfast! Researchers at Harvard University recently found that skipping breakfast could increase your risk of heart attack by 27 percent. And while many are suggesting this study reflects general lifestyle habits more than it does the result of skipping breakfast—due to the fact that those who regularly eat breakfast are also less likely to be smokers, have high cholesterol or high blood pressure—eating breakfast is still more than just good advice from your mom. Eating breakfast every day has been shown to significantly help protect against cardiovascular disease, obesity, diabetes and dysmenorrhea (acute pain during a woman’s menstruation), among other conditions.

Not only does eating breakfast help ward off these chronic health conditions, it also has been shown to help improve body weight, boost energy and heighten mental acuity. Pursuit of these benefits has guided much of the research conducted on breakfast consumption, specifically in relation to children and adolescents. That said, a host of research studies has also shown both short-term and long-term negative health impacts among adults who regularly forgo a morning meal.

If true, why does 1 out of every 4 adults and 1 out of every 3 children regularly skip eating breakfast?

Common excuses include: don’t have enough time to eat, forgot to eat, and trying to control weight by cutting out a meal. Folks, if you fall into one of these traps, let us enlighten you with findings from a sampling of recent studies:

1. Unbalanced glucose levels

In a new research paper published this month in The Journal of Nutrition, University of Minnesota researchers discovered that adults participating in the study who ingested a daily breakfast meal had more than 50% lower levels of glucose coursing through their veins up to five hours after eating breakfast than people who did not consume breakfast. High blood glucose levels are strongly associated with diabetes and obesity.

One would think eating a meal would naturally boost glucose levels, especially compared to not eating at all, but apparently our bodies put breakfast calories to work immediately, quickly clearing sugar from the bloodstream. By comparison, researchers believe the absence of a morning meal causes the body to release stored sugars to compensate.

2. Poor and/or irregular digestion

In a separate study published in December 2010, a group of Japanese researchers found that college-aged women who frequently skipped breakfast experienced significantly higher incidences of constipation, painful menstrual symptoms, and other reproductive cycle complications than women who regularly consumed a morning meal.

While scientists do not have a firm handle as to why skipping breakfast disrupts reproductive cycles among women, the researchers in this particular study speculated that the timing of food consumption (particularly early-in-the-day food consumption) is strongly correlated with healthy menstruation cycles.

3. Increased risk of obesity

In 2003, a group of University of Massachusetts researchers found that those who regularly skipped breakfast had a 4.5 times higher risk of obesity versus everyday breakfast eaters. The researchers noted that those who skipped breakfast ate significantly more calories during the day than consistent breakfast eaters, leading the study team to conclude that skipping the morning meal leads to more ravenous eating (hence weight gain) later in the day.

4. High cholesterol levels

UK-based researchers in 2005 reported that women participating in the study who skipped breakfast daily had significantly higher total and LDL (bad) cholesterol, oxidized LDL and triglycerides in comparison with women in the study who ingested breakfast every morning. In fact, over the course of the study, women who omitted breakfast saw their blood lipid measures rise notably, while regular morning meal consumers saw theirs drop.

5. Increased diabetes risk

A 2009 Japanese study showed that current cigarette smokers who skipped breakfast (and 55% of the current smokers in the study did not eat breakfast) had a 4.7 times higher risk of developing diabetes than either current smokers who regularly ate breakfast or never-smoking regular breakfast consumers. That’s not a misprint — 4.7 times higher odds of developing diabetes!

There are many other studies echoing similar results in different groups of adults, adolescents and children. Therefore, if you are at risk for one or more of these conditions and you don’t regularly eat breakfast, you would be well served to reconsider your decision to pass on a morning meal.

Getting More Out of Your Breakfast: Healthy advice for regular breakfast eaters

Alright, presuming we’ve now convinced those of you who haven’t been eating breakfast regularly to add a morning meal to your daily routine, we’ll bet you’d like to know what breakfast foods offer the healthiest start.

Unfortunately, it’s not a whopping Belgian waffle with copious butter and syrup. It’s not even a bagel with cream cheese or butter paired with a glass of OJ, milk or cup of coffee. Nope, the No. 1 breakfast food correlated with better health is ready-to-eat cereals made from whole grains combined with low-fat milk. For those wishing to spice it up a bit, add some fresh fruit into the mix.

Cereals made with whole grains typically have a higher fiber content, lower glycemic index value (glycemic index is a measure applied by dieticians to assess the blood sugar raising effects of various foods), and less harmful fats and oils.

If you can’t see yourself chomping on bran flakes to start the day, at least try to avoid breakfast foods that have been shown to possess a high glycemic index. High glycemic index foods are strongly correlated with obesity, diabetes, high blood pressure and other cardiovascular risk factors. Some of the biggest breakfast offenders on this list include doughnuts, waffles, bagels and toast made from white bread.


Pereira MA, et al. Breakfast Frequency and Quality May Affect Glycemia and Appetite in Adults and Children. The Journal of Nutrition. 2011; 141:163S-168S.

Fujiwra T, Nakata R. Skipping breakfast is associated with reproductive dysfunction in post-adolescent female college students. Appetite. 2010; 55: 14-717.

Ma Y, et al. Association between Eating Patterns and Obesity in a Free-living US Adult Population. American Journal of Epidemiology. 2003; 158: 85-92.

Farshchi HR, et al. Deleterious effects of omitting breakfast on insulin sensitivity and fasting lipid profiles in healthy lean women. American Journal of Clinical Nutrition. 2005;81:388-396.

Nishiyama M, et al. The Combined Unhealthy Behaviors of Breakfast Skipping and Smoking Are Associated with the Prevalence of Diabetes Mellitus. Tokohu J. Exp. Med. 2009;218:259-264.

Kevin P. Donoghue is the Chief Executive Officer of Vitamin Research Products. He is also the publisher of Breathe Better for Life, a guide to better breathing for COPD patients, smokers and others who suffer from chronic shortness of breath. Kevin has 20 years publishing experience, the majority spent providing critical information to help people live better, healthier and more secure lives.

For tips, tools and strategies to address your most pressing health concerns and make a positive difference in your life, visit Peak Health Advocate.

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6 responses to “5 Things That Happen to Your Body When You Skip Breakfast”

  1. […] read – 5 Reasons You Should Never Skip Breakfast- The Secret to Preventing Most Age-Related […]

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  3. Doug Starr says:

    This research simply does not make any sense. HOW would you expect to have glucose in your veins if you are fasting for breakfast? Wouldn’t eating breakfast cause that? Also they need to study on what type of breakfasts are being eaten (hi-carb, hi-protein, etc.) Can make a huge difference on the outcomes. Sorry, fasting for breakfast makes WAY too much sense to me.

  4. care says:

    Admiring the persistence you put into your blog and detailed information you provide.
    It’s good to come across a blog every once in a while that
    isn’t the same unwanted rehashed information. Excellent read!
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  5. Nice read, I just passed this onto a friend who was doing some research on that. And he actually bought me lunch since I found it for him smile Thus let me rephrase that: Thank you for lunch!