While not eating in the morning might have some short term benefits for some people, it also carries longer-term health consequences that aren’t discussed much. Here’s what science has to say on the subject.
Coffee Instead of Breakfast. A Really Bad Idea
Choosing to skip breakfast does a number on your body’s ability to produce the neurotransmitter serotonin. This important substance is derived from the amino acid tryptophan.
Tryptophan, like all the amino acids, comes from the protein we eat. The best sources are meat and eggs from pastured animals. Some of the best plant sources are wheat, walnuts, and sea vegetables, although they contain a fraction of the amount in animal foods.
Once the digestive tract converts the tryptophan, the serotonin makes us feel happy, calm and self-confident even under stress.
Proper serotonin production throughout the day is important for a restful night’s sleep. The body converts serotonin into melatonin at dusk.
When you don’t eat a breakfast that contains 20-30 grams of tryptophan containing protein (NOT collagen or protein powder), your body isn’t able to make adequate serotonin throughout the day. While eating protein-rich meals later definitely helps, you will still be playing catch up. (1)
At the end of the day, if you didn’t produce enough serotonin, you probably won’t sleep as deeply as you should. Ironically, this can ultimately contribute to weight gain, which is the opposite of what many breakfast skippers are trying to achieve!
In sum, if you love your morning coffee, there is no reason not to still have it … just eat breakfast first.
Intermittent Fasting. Skipping Dinner is Smarter
If you are a fan of intermittent fasting to lose weight, that is certainly fine. There’s some good science to back up the practice.
What you might not know is that scientists have found that those that fast by skipping dinner have better results than those that fast by skipping breakfast.
In short, the time window you choose to fast really matters.
Those who eat in the morning and afternoon and skip eating later have far healthier blood lipid profiles and better blood sugar control than those who skip breakfast and eat late in the day.
In addition, breakfast eaters tend to consume more nutrients overall than those who miss. (2)
Missing Breakfast Increases Risk of Death
In April 2019, the peer-reviewed Journal of the American College of Cardiology published a study that examined the relationship between skipping breakfast, the development of cardiovascular disease, and all-cause mortality.
Among 6550 study participants (48.2% male), the mean age was 53.2 years. The study used both surveys and death records to demonstrate that people who skipped breakfast were 87 percent more likely to have died of cardiovascular disease than those who ate in the morning. (3)
This strong association remained even after adjustment for age, sex, race/ethnicity, socioeconomic status, dietary and lifestyle factors, body mass index, and even cardiovascular risk factors!
Another study published in the peer-reviewed European Journal of Preventative Cardiology found that patients who had experienced a heart attack were between 4 and 5 times as likely to die during recovery if they ate late night dinners and then skipped breakfast. (4)
It’s Not Ok to Skip Breakfast
If you need to ditch a few pounds, it’s best to skip dinner instead. Love your bulletproof morning Joe? No worries. Just drink it with or after breakfast.
(1) The Mood Cure
(2) Many intermittent fasters skip breakfast. Here’s why that’s not a good idea
(3) Association of Skipping Breakfast With Cardiovascular and All-Cause Mortality
(4) Skipping breakfast concomitant with late-night dinner eating is associated with worse outcomes following ST-segment elevation myocardial infarction
Sarah Pope has been a Health and Nutrition Educator since 2002. Her work is dedicated to helping families effectively incorporate the principles of ancestral diets within the modern household. She is a sought after lecturer around the world for conferences, summits, and podcasts.
Her work has been covered by major media including USA Today, ABC, NBC, and many others.