Skipping Breakfast: Healthy or Harmful?

It’s 8:00 AM in Bangkok. Mornings move quickly- traffic builds, messages start coming in, and the day demands attention before it even fully begins. In the middle of it all, breakfast is often the first thing to be skipped.

For many people, this isn’t a conscious decision- it’s simply part of a busy routine. A quick coffee replaces a full meal, and eating is pushed to later in the day. At the same time, trends like intermittent fasting have made skipping breakfast feel more intentional, even beneficial.

But is this daily habit actually supporting your health, or could it have effects you don’t immediately notice?

Why Do People Skip Breakfast?

Skipping breakfast is often not just a health decision- it’s a lifestyle habit. Common reasons include:

• Lack of time in the morning

• Not feeling hungry early in the day

• Trying to lose weight

• Following intermittent fasting routines

In Thailand, fast-paced urban life and café culture also influence eating patterns. Many people replace breakfast with coffee or delay their first meal until later in the day.

While this may seem harmless, the long-term effects depend on how your body responds.

Potential Benefits of Skipping Breakfast

1. May Support Weight Control (But Only Slightly)

Some research suggests skipping breakfast can reduce daily calorie intake. In a systematic review published in The BMJ, Sievert and colleagues found that people who skipped breakfast consumed about 260 fewer calories per day on average, though the resulting weight loss was modest- around 0.44 kg over time. However, this effect is small and not consistent across individuals. So, skipping breakfast alone is not a reliable weight-loss strategy.

2. Can Align with Intermittent Fasting

Skipping breakfast is often part of time-restricted eating, a form of intermittent fasting. Writing in The New England Journal of Medicine, researchers Cabo and Mattson explained that intermittent fasting may improve insulin sensitivity, support metabolic health, and help regulate overall energy balance. However, these benefits still depend on maintaining a balanced diet overall, not just skipping meals.

3. May Simplify Eating Habits

For some people, fewer meals can make it easier to manage their daily routine and avoid constant snacking.

But this only works when later meals are nutrient-rich and balanced.

Potential Risks of Skipping Breakfast

1. Increased Risk of Cardiovascular Disease

One of the strongest findings in research is the link between skipping breakfast and heart health. Ofori-Asenso, Owen, and Liew, in a large review, reported that skipping breakfast is associated with a higher risk of cardiovascular disease, along with an increased likelihood of high blood pressure and poor cholesterol levels. These risks are important because cardiovascular disease remains one of the leading causes of death worldwide.

2. Higher Risk of Metabolic Syndrome

Skipping breakfast has also been linked to metabolic problems, including:

• High blood sugar

• Abdominal obesity

• Increased blood pressure

Paoli and colleagues, writing in the journal Nutrients, found that regularly skipping breakfast was linked to a higher risk of metabolic syndrome- an issue that raises the likelihood of developing type 2 diabetes and heart disease.

3. Reduced Energy and Mental Performance

Skipping breakfast can also affect how you feel and function throughout the day. Hendrie, Golley, and Noakes, in their 2018 study, highlighted that eating breakfast is linked to better memory, concentration, and mental performance. On the other hand, skipping breakfast may contribute to fatigue, irritability, and reduced productivity.

Does Skipping Breakfast Help with Weight Loss?

This is one of the most common questions- and one of the most misunderstood. Research demonstrates that while some people lose weight when skipping breakfast, others tend to eat more later and gain weight. Sievert (2019), in a systematic review, concluded that there is no strong evidence that eating or skipping breakfast reliably impacts weight loss. Instead, weight management is influenced more by total calorie intake and the quality of the diet, rather than meal timing alone.

Who Should Not Skip Breakfast?

Skipping breakfast may not be suitable for everyone.

It may be harmful for:

• People with diabetes or unstable blood sugar

• Children and adolescents

• Individuals with high energy needs

• People who feel dizzy or fatigued without food

For these groups, regular meals help maintain stable energy and metabolic balance.

Modern Eating Habits: What Matters Most

In today’s lifestyle, the issue is not just whether breakfast is skipped- but what replaces it. When mornings are rushed, a proper meal is often replaced with something quick, like coffee or a sugary drink. While convenient, this choice can influence eating patterns for the rest of the day. As the day continues, this early choice often influences what comes next. Hunger may build later on, leading to a greater reliance on processed or low-nutrient foods, especially when time remains limited. At the same time, irregular eating schedules can become the norm, with meals shifting later into the day or becoming inconsistent altogether.

Ultimately, it’s not simply skipping breakfast that matters, but the combination of what is eaten later, how regularly meals are consumed, and the overall quality of the diet that has the greatest impact on health.

So, Is Skipping Breakfast Healthy or Harmful?

The impact of skipping breakfast depends on how it fits into your overall lifestyle. It may be beneficial when supported by a balanced, nutrient-rich diet, stable energy levels, and controlled eating later in the day.

However, it can be harmful if it leads to fatigue, poor concentration, overeating, or a lack of essential nutrients- especially for individuals with underlying metabolic or cardiovascular risks.

Overall, skipping breakfast is not inherently good or bad; its effects are shaped by the quality of the diet, eating patterns, and individual health status.

Conclusion

Skipping breakfast is not automatically unhealthy, but it is not always beneficial either. Research shows that while short-term effects, like eating fewer calories, are relatively small, the possible long-term risks- especially for heart and metabolic health are more consistent.

The key difference comes down to individual needs. For people who need steady energy, such as students, athletes, or those with blood sugar concerns, eating in the morning can help maintain focus and stability. On the other hand, for healthy individuals who feel energized without breakfast and maintain a balanced diet throughout the day, skipping it may not be a problem.

In the end, healthy eating is not about strict rules or following trends. It’s about building a balanced routine, consistent habits, and a lifestyle that supports your overall well-being.

References

Sievert, K. (2019) Effect of breakfast on weight and energy intake: Systematic review and meta-analysis of randomised controlled trials | the BMJ. Available at: https://www.bmj.com/content/364/bmj.l42 (Accessed: 30 April 2026). 

Cabo, R. de and Mattson, M.P. (2019) Effects of intermittent fasting on health, aging, and disease | New England Journal of Medicine. Available at: https://www.nejm.org/doi/full/10.1056/NEJMra1905136 (Accessed: 30 April 2026). 

Ofori-Asenso, R., Owen, A.J. and Liew, D. (2019) Skipping breakfast and the risk of cardiovascular disease AND DEATH: A systematic review of prospective cohort studies in primary prevention settings, Journal of cardiovascular development and disease. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC6787634/ (Accessed: 30 April 2026). 

Paoli, A. et al. (2019) The influence of meal frequency and timing on health in humans: The role of fasting, Nutrients. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC6520689/ (Accessed: 30 April 2026). 

Hendrie, G.A., Golley, R.K. and Noakes, M. (2018) Compliance with dietary guidelines varies by weight status: A cross-sectional study of Australian adults, Nutrients. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC5852773/ (Accessed: 30 April 2026).