Many people delay lunch due to work, then overeat when overly hungry. For individuals with diabetes, both the timing and composition of meals can impact blood sugar fluctuations.

Have lunch about 3-4 hours after breakfast

The body's circadian rhythm system helps regulate insulin secretion, glucose metabolism, and energy balance. Therefore, meal timing, in addition to the quantity and type of food, can influence blood sugar response.

According to Eatingwell, having lunch approximately 3-4 hours after breakfast can benefit blood sugar. For example, if breakfast is at 7 am, lunch could be around 10-11 am. However, this timeframe is not a fixed rule for everyone; it depends on wake-up time, breakfast time, medications, and energy needs. For those with different daily routines, the appropriate lunch time will also vary. The key is to avoid eating lunch too soon after breakfast or leaving too long a gap between meals, which can lead to excessive hunger.

The American Diabetes Association (ADA) also recommends that patients eat at relatively consistent times, allowing the body about 2-3 hours between meals for blood sugar levels to decrease before the next meal. Patients do not need to adhere strictly to a specific lunch hour. Maintaining a consistent eating schedule that fits one's daily routine is often more practical.

Fish is a protein source that can be combined in meals with vegetables and an appropriate amount of starch. Illustration: Bui Thuy

Lunch should include protein and fiber

Meal timing is only one aspect of blood sugar control. According to Times of India, instead of focusing on rice, noodles, or other starchy foods, lunch should combine vegetables, protein-rich foods like fish, lean meat, eggs, or beans, and an appropriate amount of starch. A balanced meal, rich in fiber and protein, can help slow digestion and limit rapid blood sugar increases after eating.

The ADA also suggests building meals with non-starchy vegetables, a protein source, and quality carbohydrates, without overemphasizing the precise measurement of each food type.

Avoid skipping breakfast and then overeating at lunch

Skipping breakfast and becoming excessively hungry by lunchtime can lead some people to eat more than usual, especially starchy and sugary foods, which then causes a rapid increase in blood sugar after the meal.

For individuals using insulin or certain blood sugar-lowering medications, arbitrarily changing meal times can increase the risk of blood sugar dropping too low. Therefore, if a patient wishes to alter their eating schedule, especially while undergoing diabetes treatment, they should discuss it with their doctor for appropriate adjustments.

Limit sugary drinks

Soft drinks, milk tea, sweetened fruit juices, and other sugary beverages can provide a large amount of carbohydrates in a short time without offering a corresponding feeling of fullness. Consuming them with lunch can increase the meal's total carbohydrate content and cause blood sugar to rise more rapidly.

Instead, patients should prioritize plain water or unsweetened beverages. For fruit juice, even without added sugar, the carbohydrate content still needs to be factored into the total intake, so it should not be considered an equivalent alternative to water.

Consider a light walk after eating

Instead of immediately sitting at your desk after lunch, consider a short, light walk. When exercising, muscles use glucose for energy, which can help reduce post-meal blood sugar increases.

You do not need to engage in high-intensity exercise immediately after lunch. A light walk of about 10-15 minutes is easy to do at work or home. Patients should choose an activity level appropriate for their physical condition, especially if using insulin or medications that carry a risk of hypoglycemia.

Compiled by Bao Bao