Reduce the risk of cancer. A study by the University of San Diego in the United States shows that women living in low latitudes have a lower risk of ovarian cancer than women living in high latitudes, because the former has a long sun exposure and a high intake of vitamin D, which is more conducive to cancer prevention than the latter.

Raise hormone levels. One of the cheapest natural viagra may be to get more sunshine. Researchers at Graz Medical University in Austria found that the level of testosterone in the body will change with the fluctuation of vitamin D content. After autumn every year, the levels of vitamin D and testosterone in human body will decrease synchronously, and will reach the lowest in March next year. This has little to do with sunbathers. According to the study, the daily 1 hour sunlight can increase the testosterone in the body by 69%.

Less depression. It is found that the secretion levels of adrenaline, thyroxine and gonad will increase under sufficient sunlight, thus effectively improving the negative psychology such as depression and mental depression. Liu Baofeng, a senior psychological counselor of China Mental Health Association, pointed out that in winter and rainy weather, many people suffer from insomnia, chest tightness and irritability. The reduction of sunshine time is one of the reasons for seasonal affective disorder.

Reduce colds. A study by Yale University School of Medicine found that regular sun exposure can help reduce the harm of influenza virus and other common respiratory diseases. Researchers believe that maintaining a high level of vitamin D in the body can better prevent problems such as sore throat, common cold and stuffy nose. Compared with people who spend less time in the sun, people living in sunny areas are less likely to be infected with influenza virus.