进入立冬之后,北方人有被动“猫冬”习俗,尤其老弱病残和儿童们。“猫冬”意在害怕过低的气温引发感冒等疾病,损害健康。所以,北方人在冬季定期有意识地安排自己晒晒阳光,十分重要。儿童不晒太阳妨碍生长和禾苗缺乏阳光不爱生长的道理一样,儿童缺乏阳光的沐浴,同样影响生长发育。因为钙在儿童骨骼的生长发育中起到关键的作用,而促使吃进去的钙能更多吸收,从而进一步参与到骨骼的生长发育中,还必须有维生素D的参与。而维生素D需要阳光中紫外光的刺激,才能形成更多。而缺乏阳光沐浴的孩子,尤其一两岁以内的幼儿,往往并非摄人的钙少,而主要是体内形成的维生素D Into the beginning of winter, the northerners have passive “cat winter ” customs, especially the elderly and sick and children. “Cat winter ” is intended to be afraid of too low a temperature caused by cold and other diseases, damage to health. Therefore, the northerners in the winter regularly consciously arrange their own sun, it is very important. Children do not block the growth of the sun and the lack of growth of the sun does not love the growth of the truth, children lack the sun bath, also affect growth and development. Because calcium plays a key role in the growth and development of children’s bones and promotes more absorption of calcium into the bones, further participation in the growth and development of bones must also be accompanied by the involvement of vitamin D. Vitamin D needs the sun’s UV stimulation, to form more. The lack of sunshine bathing children, especially children under the age of one or two are often not intake of calcium less, but mainly the formation of vitamin D