What are the benefits and disadvantages of sunbathing

Many girls will "talk about the sun", the sun is positioned as a woman beauty taboo! However, the sun really can only throw you a lot of skin problems? Don't worry, listen to me in detail, see the sun in the end what are the benefits and disadvantages of it.

Benefit: Cancer prevention

Plants grow by photosynthesis, without the participation of sunlight, even the most vigorous plants will droop and be lifeless. For the human body, sunlight can promote the synthesis of vitamin D. Vitamin D deficiency in the human body will increase the chance of cancer development. Students from the University of California, Santiago Distribution have studied the incidence of colon cancer in New Mexico and New York and found that the incidence of colon cancer in the latter is three times higher than that in the former. The reason is that the sunshine in New York is much shorter than in New Mexico, and people have much less opportunity to get sunlight.

Calcium supplement

As mentioned earlier sun exposure can help the body to obtain vitamin D, which can promote the body's absorption and utilization of calcium and reduce leg cramps caused by calcium deficiency. For infants and children can effectively prevent chondromalacia and rickets; for middle-aged and elderly people can also effectively prevent and control osteoporosis and rheumatoid arthritis.

Reduce the risk of skin infection

Proper exposure to UV light can effectively kill bacteria on the surface of the skin and strengthen the skin's resistance, thus reducing the chance of skin infections.

Prevent anemia

The ultraviolet rays in sunlight can stimulate bone marrow cells to produce red blood cells and improve hematopoiesis, effectively achieving the effect of preventing anemia.

Enhance physical fitness

Sunshine can enhance the immune function and increase the vitality of phagocytes. The ultraviolet rays in the sun have strong bactericidal ability and can help the body to sterilize. Proper sunlight will make the body's temperature rise slightly, and the increase in temperature will speed up the body's blood circulation and enhance metabolism, which is very beneficial for strengthening the body.

Improve sperm quality

Sun exposure enhances libido, raises male androgen levels and improves sperm quality. Testosterone levels in human blood rise with increased vitamin D levels, and some data show that one hour of sun per day can increase testosterone by more than 50%.

Harmonizes the spleen and stomach

Letting the sun shine on your back can remove the coldness from your spleen and stomach, and has a good effect on improving digestive function. Some people in the Qing Dynasty pointed out that "the back is Yang, the heart and lungs are the main", so sunbathing the back can also unblock the back meridians, which is beneficial to the heart and lungs.

The bad side of sunlight

There are so many benefits to sunbathing, but don't be "greedy for sunshine"! The duration of each skin contact with the sun is best within half an hour, especially in the summer must avoid the midday sun, otherwise the hot sun will sunburn skin, it will be more than worth it. Because excessive exposure to the sun will cause the following problems. (1) Exposure to the sun can cause peeling, redness and swelling, and long-term exposure to the hot sun will increase the chances of skin cancer. (2) Body temperature will rise when exposed to the sun, which can easily lead to heat stroke. (3) Melanin deposition, inducing freckles sun spots and other skin problems. (4) Increase the complication rate of cardiovascular diseases. (5) Accelerate skin aging.