Excessive exposure to the sun can lead to skin cancer. Sunbathing was very popular in western countries in the 1970s and 1980s, but it was later discovered that many people got skin cancer, so the American Skin Cancer Foundation issued a poster saying, "If you worship the sun, pray you don't get skin cancer." If you are outdoors, where the sun is very strong, you should wear sunscreen for a long time and stay in the sun for a long time, which is actually a habit harmful to your health.
Benefits of proper sun exposure:
Sunbathing is a natural therapy to strengthen skin and treat diseases with the help of sunlight. According to experts, human bacterial infection, starting from the skin, often basking in the sun, can effectively kill bacteria or inhibit bacteria. The time of sunbathing varies according to the region and season. Summer can be at 9 ~ 1 1 and 4 ~ 6 pm. Winter 10 morning to 2 pm is most suitable. You can sunbathe for about 2 hours at a time. When sunbathing, don't sleep on an empty stomach, expose your body properly and change your position frequently. Wear straw hats and sunglasses in summer to protect your head and eyes and prevent heatstroke; Wear thick clothes properly in winter, and generally do not expose your body to prevent colds from causing other diseases.
Don't take a bath immediately after sunbathing. Before sunbathing in summer, apply moisturizing oil or vanishing cream to the exposed parts. The elderly lack vitamin D, and their heads will sweat more, which can decalcify bones and cause osteomalacia or osteoporosis. People who regularly sunbathe can promote metabolism and enhance the absorption of calcium and phosphorus. It has certain curative effect on anemia, digestive tract diseases, insomnia, arthritis and dermatosis. The main way for human beings to obtain vitamin D is through sunlight or ultraviolet radiation. Vitamin d is not supplemented by diet. If you take vitamin D orally, it will cause poisoning or even death in severe cases. Therefore, another advantage of sunbathing is that it can naturally and economically supplement the essential vitamins of the human body.