Carbohydrates are essential for energy, enabling stable body function. However, for individuals aiming for weight loss or managing diabetes, consuming many carbohydrates in the evening can negatively affect blood sugar levels and hinder weight loss efforts.

The risks of evening carb intake

Elevated blood sugar is a significant concern. According to Verywell Health, adequate and deep sleep plays a role in weight control. Insufficient sleep can alter levels of hunger and satiety hormones like ghrelin and leptin, thereby influencing appetite. Consuming excessive carbohydrates at dinner, especially refined types such as white rice, vermicelli, pho, bread, pasta, and sugary pastries, can cause a rapid post-meal blood sugar spike. For some individuals, this elevated blood sugar can lead to thirst and frequent urination, disrupting sleep. However, not all evening carbohydrate consumption necessarily diminishes sleep quality.

Frequent blood sugar spikes can impact metabolism and weight management. Insulin resistance makes the body less efficient at utilizing glucose, increasing the tendency to store energy as fat. Individuals aiming for weight loss should consume carbohydrates in moderation, prioritize less refined types, and avoid excessive intake in the evening.

Eating bread in the evening can easily raise blood sugar. *Photo: Anh Chi*

Another concern is calorie surplus. In the evening, the body is typically less active, so energy requirements may be lower. If too many carbohydrates are consumed and total energy intake exceeds demand, the surplus energy can be stored as fat, contributing to increased abdominal and visceral fat over time. The body's insulin sensitivity and glucose processing ability tend to decrease in the evening compared to during the day. Therefore, consuming many carbohydrates, especially refined ones, at this time can lead to higher blood sugar and affect energy metabolism, according to Health.

Smart carb choices for better outcomes

Fiber-rich carbohydrates like brown rice and oats digest slowly, promoting prolonged satiety and limiting rapid post-meal blood sugar spikes. Carbohydrates can also influence the utilization of tryptophan and neurotransmitters related to sleep, potentially contributing to good sleep.

Individuals aiming for weight loss should prioritize less refined, fiber-rich carbohydrates and limit sugary, refined carbohydrate foods. Examples include: brown rice, oats, whole-wheat bread, legumes, sweet potatoes, potatoes, and green vegetables, which can be consumed in appropriate portions. Dieters should eat moderately in the evening, avoiding overeating. They can consume fiber first, followed by lean protein, and finally carbohydrates to mitigate rapid post-meal blood sugar increases. After dinner, a light walk or cycling for 10-20 minutes helps increase energy expenditure and supports blood sugar control.

Anh Chi (Compiled)