The bedroom light is too bright and may be obese

Ample sleep is the cornerstone of health, and the bedroom environment will affect the quality of sleep to some extent. Recently, a study by Nara Medical University in Japan found that the bedroom lights are too bright, which can cause the body's biological clock and endocrine disorders, which not only affects sleep, but also hurts physical and mental health.

1. Increase the risk of depression. According to the study, any kind of light before going to bed or sleeping, including the crevices of the curtains and the flash of the smartphone screen, can disturb the body clock and induce depression. The data show that 75% of people with depression have symptoms of insomnia, which further worsens the condition of people with depression.

2. High blood lipids, easy obesity, and increased risk of heart disease. Sleep quality affects the body's endocrine and digestive systems. When you are not getting enough sleep or insomnia, the body can't digest the fat that is eaten during the day, so fat deposits, leading to increased blood lipids and increased obesity. At night, the tension of the sympathetic nerves will decrease compared with the daytime. If sleep is affected, the sympathetic tone will increase, causing abnormal changes in the systolic and diastolic blood pressures of the heart, leading to an increased risk of heart and cardiovascular diseases.

3. Affect melatonin secretion and production of immune factors, more susceptible to cancer. Melatonin is a natural hormone that promotes sleep. A study in the Journal of Physiology reports that exposure to light at bedtime can block the secretion of melatonin, and its level directly affects the quality of sleep. Melatonin is the strongest endogenous free radical scavenger ever discovered, and its powerful antioxidant capacity prevents oxidative damage in cells. Most of the cell's metabolism or damaged repair process is carried out during sleep at night. When the melatonin secretion and the lack of immune factors are absent in the human body, the quality of sleep will decrease, and cell renewal will be blocked, which may lead to cancer.