Does Skipping Meals Affect Health? Insights on Nutrition and Blood Sugar - Nutrition

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Does skipping a meal or not eating when not hungry affect health?


Recently, I may have indulged too much and gained several kilograms, so I started trying to skip a meal or not eat if I don't feel hungry.
Will this affect my health? Additionally, I'm concerned whether skipping a meal could lead to low blood sugar.
Generally, does this cause low blood sugar levels (even leading to fainting or dizziness)? I do not have any chronic diseases, I have a regular exercise routine, and I am a 35-year-old male.
Thank you.

Dùzi pàng yī quān, 30~39 year old female. Ask Date: 2021/10/06

Dr. Cai Xiuwen reply Nutrition


Hello, the body's energy metabolism is a dynamic balance that depends on physical activity and caloric intake.
When physical activity is high and caloric intake is low, the body will first utilize stored glycogen and fat to maintain basal metabolic rate.
Short-term caloric restriction generally does not have significant health impacts, unless there are underlying chronic conditions, individual metabolic factors, or medication effects, which may increase the risk of hypoglycemia.
If you have previously experienced symptoms of hypoglycemia after skipping a meal, it is advisable to consult with a family medicine or endocrinology specialist to understand the causes of your hypoglycemia.
This message is provided by a nutritionist from Nantou Hospital, Ministry of Health and Welfare, wishing you safety and health.

Reply Date: 2021/10/06

More Info


Skipping meals can have significant implications for your health, particularly concerning blood sugar levels and overall nutrition. While it may seem like a quick fix for weight management, the long-term effects can be detrimental.

When you skip meals, especially breakfast or lunch, your body may not receive the necessary nutrients it requires to function optimally. This can lead to nutrient deficiencies over time, which can affect various bodily functions, including metabolism, immune response, and energy levels. For someone who is physically active, like yourself, this can be particularly concerning as your body needs adequate fuel to sustain energy levels during workouts and daily activities.

One of the immediate concerns with skipping meals is the potential for blood sugar fluctuations. When you eat, your body breaks down food into glucose, which is used for energy. If you skip a meal, your blood sugar levels can drop, leading to hypoglycemia (low blood sugar). Symptoms of hypoglycemia can include dizziness, weakness, confusion, irritability, and in severe cases, fainting. Although you mentioned that you do not have any chronic conditions like diabetes or hypertension, your body still relies on a steady intake of food to maintain stable blood sugar levels.

For a 35-year-old male with a regular exercise routine, it is crucial to maintain a balanced diet that includes a variety of nutrients. Instead of skipping meals, consider smaller, more frequent meals that can help regulate blood sugar levels and prevent hunger pangs. This approach can also help manage weight more effectively than skipping meals, as it keeps your metabolism active and reduces the likelihood of overeating later in the day.

If you are concerned about weight gain, focus on the quality of the food you consume rather than the quantity alone. Incorporate whole foods such as fruits, vegetables, whole grains, lean proteins, and healthy fats into your diet. These foods not only provide essential nutrients but also help keep you satiated, reducing the temptation to skip meals.

Additionally, staying hydrated is essential. Sometimes, feelings of hunger can be mistaken for thirst. Drinking enough water throughout the day can help manage your appetite and support overall health.

If you find yourself feeling dizzy or lightheaded after skipping meals, it may be a sign that your body is not getting the nutrients it needs. In such cases, it is advisable to consult with a healthcare professional or a registered dietitian who can provide personalized guidance based on your specific health needs and lifestyle.

In summary, while it may be tempting to skip meals as a strategy for weight loss, it can lead to negative health outcomes, particularly concerning blood sugar levels and overall nutrition. Instead, aim for a balanced diet with regular meals to support your health and fitness goals.

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