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在地球上,如果没有太阳,就不会有氧气、植物、动物,也不会有人类。太阳无偿赋予人类光和热。太阳的辐射使我们的红血球增多,使皮下的7-脱氢胆固醇转化为维生素D,从而使人类免患佝偻病。太阳对人的心理健康同样重要,缺少阳光照射会使人情绪低落,患上抑郁症。每天只要晒10分钟太阳,人们就能得到足够的维生素D,阳光还能促进人的血液循环,抑制度脂腺的活动,增强免疫系统功能,杀灭病原体,减少身体发生炎症的可能性。
If there is no sun on earth, there will be no oxygen, plants, animals, nor human beings. The sun gives mankind light and heat for nothing. The sun’s radiation causes our red blood cells to multiply, converting subcutaneous 7-dehydrocholesterols to vitamin D, thus protecting humans against rickets. The sun is equally important to people’s mental health. The lack of sunlight can depress mood and depression. As long as the sun 10 minutes a day, people will be able to get enough vitamin D, the sun can also promote blood circulation, inhibition of fat gland activity, enhance immune system function, kill pathogens and reduce the body’s possibility of inflammation.