Why You Feel Sleepy After Lunch: Insights from a US Doctor

Feeling drowsy after lunch is a common experience for many. This phenomenon isn't merely a sign of laziness; it's a result of real physiological changes in the body following meals.

Dr. Kunal Sood, an anaesthesiologist, explains that after consuming a large meal, especially one rich in carbohydrates or fats, the body directs blood flow toward the gastrointestinal tract to aid digestion. This process, known as splanchnic circulation, can lead to a relative decrease in blood flow to the brain, resulting in feelings of fatigue and mental fog.

Moreover, large meals can cause spikes in blood glucose levels and subsequent insulin responses. As the glucose is cleared from circulation, some individuals may experience decreased energy levels, impacting alertness without actually having low blood sugar.

Dr. Sood also mentions the concept of postprandial hypotension, where blood pressure drops after meals due to inadequate compensation by the body. This can be particularly prevalent among older adults or those with certain health conditions.

To combat these post-lunch energy dips, Dr. Sood suggests simple strategies such as opting for smaller, balanced meals that include protein and micronutrients, and engaging in light activity after eating. These adjustments can help reduce excessive blood pooling in the gut and mitigate feelings of sluggishness.

In conclusion, the afternoon slump is a real physiological response, and with a few mindful changes, it's possible to maintain energy levels throughout the day.