Does staying up late worsen dampness in the body?

Mar 25, 2025 Source: Cainiu Health
Disease description:

Recently, I've been staying up late working overtime a lot, and I feel uncomfortable all over. In the morning, my eyelids are swollen, my hair gets oily quickly, and I constantly feel tired. Could these symptoms be due to an accumulation of dampness caused by staying up late?

Doctor's answer (1)
Dr. Zhang Xiuhong

In general, staying up late can exacerbate dampness in the body.

The spleen and stomach are vital organs responsible for the transformation and transportation of bodily fluids. When their functions weaken, fluid retention can occur, leading to increased dampness. The spleen rests and repairs itself primarily between 11 p.m. and 3 a.m. Staying up during this time can interfere with the spleen's normal functioning and impair its ability to transform and transport fluids, thereby worsening dampness. Furthermore, staying up late can affect the body's metabolic rate and endocrine system, potentially causing imbalances in fluid metabolism and further increasing dampness.

In addition,熬夜 can lead to a decrease in immune function, making the body more susceptible to external damp pathogens. During late-night hours, individuals often develop poor eating habits, such as consuming excessive amounts of raw, cold, greasy, or spicy foods, which can further contribute to internal dampness.

It is recommended to avoid staying up late as much as possible in daily life, maintain regular sleeping patterns, and pay attention to balanced nutrition. Consuming foods that help eliminate dampness, such as coix seed and red adzuki beans, may aid in removing excess dampness from the body.