Although it is not dangerous to skip breakfast every once in a while, doing it regularly may affect the way you feel (dropping energy, metabolism slows down and mood changes) and your overall health. A healthy breakfast that has at least some protein, healthy fats, and complex carbohydrates will help you start your day on the right foot. Even a small amount of food at breakfast can affect how well your body runs and how good or bad you feel.
1. Blood Sugar Drops and Energy Levels Drop from Not Eating Breakfast
After going without food overnight, your body will use stored glucose (from glycogen) to give you energy during the day. If you do not eat breakfast, those stored sources will continue to eat away at themselves without being replenished (and hence, your body relies on these stored sources for its fuel). This can lead to low blood sugar levels and make you feel tired, dizzy, or weak. The brain relies on glucose; therefore, if you do not have any amount of glucose in your body, even if it is at a slightly lower level than it normally is, you will not be alert, focused or productive in the morning.
2. Slow Down Your Metabolism
Eating breakfast “kick-starts” your metabolism for the rest of the day. If you skip breakfast, your body may enter energy conservation mode to keep energy and burn calories at a slower rate throughout the day. Over time, this will lead to a slower metabolism and less efficient calorie burning, and cause you to have a more difficult time maintaining weight (or losing it). Skipping breakfast does not save you calories and can lead to you being less efficient in burning calories.
3. Increased Hunger and Overeating Later
Skipping breakfast frequently results in having a strong desire to overeat later in the day; typically lunchtime or after. You are also likely to snack excessively when hungry when you do not eat breakfast and to select a large number of calorie-dense/sugar-laden items. Ghrelin, an appetite-stimulating hormone, is released from the body at a higher velocity, whereas leptin, the hormone signaling the body that it has had enough to eat, has a lesser affect. This makes it difficult to judge how much to eat and due to calorie consumption it is possible to consume more calories for a day than if you had eaten breakfast.
4. Impaired Cognitive Function
Your brain requires an uninterrupted supply of nutrients for optimal functioning. Therefore, not eating breakfast would result in decreased performance levels with all areas of cognition (concentration, memory, and decision-making ability). Both students and working adults may have challenges with building sustain attention and/or solving problems when they haven’t eaten breakfast. Research shows that people who regularly eat breakfast perform better at cognitive tasks requiring clarity or sustained attention than those who regularly skip breakfast.
5. Mood Changes and Irritability
Low blood sugar levels can also impact your mood. If you skip breakfast, you may feel grumpy, anxious, or stressed; a state often referred to as “hangry.” The lack of nutritional input disrupts the balance of neurotransmitters in the body, which can cause mood swings and diminished levels of emotional stability throughout the day.
6. Impact on Hormonal Balance
If you skip breakfast, there is a possibility that your body’s hormonal balance will be changed. Specifically, insulin and cortisol (the “stress hormone”) are affected by not eating breakfast in the morning. When you do not eat food, cortisol can stay elevated for a longer period and lead to an increase in your level of stress. In addition to this potential stress increase, the irregular nature of eating can create a gradual decrease in insulin sensitivity which may increase your chance of developing metabolic issues.
7. Potential Weight Gain Over Time
When you skip breakfast, you may be thinking that you are saving calories; however, the truth is, you are setting yourself up for overeating later in the day and may eventually end up gaining weight from the slower metabolism. People who skip breakfast tend to eat more convenient processed foods later in the day, which tend to have more fats and sugar than other food types.
8. Nutritional Deficiencies
Breakfast is a great opportunity for consuming essential nutrients like fiber, vitamins, and minerals, etc. Regularly skipping breakfast increases your chances of developing nutrient deficiencies, especially if you are not meeting your dietary needs at other meals. Some nutrients that may be missed by skipping breakfast include calcium, iron, and B vitamins, which help in providing energy to the body and keeping it healthy.
9. Effects on Heart Health
Studies suggest that long-term skipping breakfast is related to an increased risk of developing cardiovascular disease. The association may be attributable to changes in cholesterol levels, blood pressure, and sensitivity to insulin when you do not eat breakfast. In addition, irregularities in your food intake can result in inflammation, which is a known contributor to the development of cardiovascular diseases.
10. Disrupted Digestive Rhythm
Some research indicates that people who skip breakfast also disrupt their digestive rhythm and thereby will suffer from symptoms such as heartburn, excess gas or bloating later on, as well as having irregular bowel movements. Additionally, by eating breakfast, you can “wake-up” your digestive system and establish better overall gut health as well as improve gut health during the rest of the day.
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