论文部分内容阅读
晒太阳能够帮助人体获得维生素D,这也是人体内维生素D的主要来源。维生素D可以帮助人体摄取和吸收钙、磷,使小朋友的骨骼长得更结实,对大人则有预防骨质疏松、类风湿性关节炎等病症的功效。而玻璃可将阳光中50%到70%的紫外线阻拦在外,故而减少了维生素D的合成。
The sun can help the body to get vitamin D, which is also the main source of vitamin D in the body. Vitamin D can help the body uptake and absorption of calcium and phosphorus, so that children’s bones grow more solid, while adults have the effect of preventing osteoporosis, rheumatoid arthritis and other diseases. Glass can block 50% to 70% of sunlight in the sun, thus reducing the vitamin D synthesis.