The key facts
- Fast carbohydrates, fatty food and alcohol intensify afternoon sleepiness
- Sleepiness after eating alone does not allow diagnosing diabetes or insulin resistance
- A medical check-up is needed with thirst, frequent urination, worsening vision and weight changes
What causes the urge to sleep after lunch
Sweets, pastries and white bread can noticeably increase sleepiness after eating, especially after a large lunch. This was stated in an interview with RT by gastroenterologist at SM-Clinic Olesya Sinelnikova. According to her, quickly absorbed carbohydrates cause sharp fluctuations in blood glucose and insulin levels, fatty dishes add sluggishness due to long digestion, and alcohol further increases the desire to sleep. This is reported by Life.ru and Gazeta.Ru.
When it is normal and when it is a signal
The doctor emphasized that slight sleepiness after lunch does not necessarily indicate health problems: in many people, alertness naturally declines in the middle of the day. She also refuted the popular explanation that after eating blood flows away from the brain and it experiences a lack of oxygen: 'In a healthy person, the brain's blood supply is maintained at the necessary level. Sleepiness is related to the complex interplay of the nervous system, digestive hormones, food composition, time of day and pre-existing sleep deprivation,' Sinelnikova explained. Sometimes lunch merely reveals existing fatigue — for example, in chronic sleep deprivation or obstructive sleep apnea, which may be indicated by loud snoring, breathing pauses at night, morning headaches and constant exhaustion.
When to see a doctor
Sleepiness alone, the gastroenterologist noted, is not enough to diagnose diabetes or insulin resistance. A medical examination is needed if, at the same time, intense thirst, frequent urination, worsening or blurred vision, poorly healing skin lesions or unexplained weight changes appear. To stay alert after eating, she advised avoiding overly large portions, not letting yourself get very hungry, and combining protein foods, vegetables, fiber and a moderate amount of complex carbohydrates in the diet. If irresistible sleepiness occurs after every meal and persists for weeks, it is worth seeing a general practitioner.
Context
In recent days, doctors have also raised the topic of fatigue in other aspects: psychotherapist Irina Krashkina explained that a feeling of laziness may hide sleep deprivation, overwork or stress, but sometimes anemia, thyroid dysfunction, deficiencies, depression or burnout. Also, doctors previously explained how to distinguish seasonal depression from autumn blues, and professor Alexey Bereznikov explained why 'catching up on sleep' for a week on weekends does not help you fully recover: quality sleep requires a regular schedule, darkness in the bedroom and the absence of irritating factors.
