Why does drinking coffee make you feel drowsy?
May 23, 2023
Source: Cainiu Health
Dr. Yang Jun
Introduction
Feeling drowsy after drinking coffee may be due to insensitivity to its components, severe lack of sleep, or excessive sugar content. Caffeine in coffee normally stimulates the cerebral cortex after consumption, resulting in increased alertness. However, if an individual is insensitive to caffeine, they may feel sleepy after drinking coffee.
Feeling drowsy after drinking coffee may be due to insensitivity to its ingredients, severe lack of sleep, or excessive sugar content. The specific reasons are analyzed as follows:
1. Insensitivity to ingredients
Caffeine in coffee normally stimulates the cerebral cortex after consumption, promoting mental alertness. However, if an individual is insensitive to caffeine, they may feel sleepy after drinking coffee.
2. Severe lack of sleep
If one is severely sleep-deprived, the body may already be in a state of extreme fatigue. In such cases, even consuming coffee might fail to reactivate brain neurons, leading to the aforementioned drowsiness.
3. Excessive sugar content
If the coffee consumed contains high levels of sugar, it may cause a rapid spike in blood glucose levels, subsequently leading to insufficient brain energy and resulting in drowsiness. However, this condition is often associated with underlying medical conditions such as diabetes, meningitis, or traumatic brain injury. It is important to promptly visit a qualified medical institution for appropriate evaluations to determine whether such conditions exist and receive targeted treatment.
It is recommended to maintain a healthy daily routine, avoid frequent late nights, and refrain from long-term coffee consumption.
