一双新皮鞋需要经常擦油保养才能穿得长久,人体的保养和擦皮鞋是同一道理。因人到中老年,机体免疫能力开始下降,尤其是老年人对各种疾病的抵抗力明显减低,很容易引起感冒、心血管疾病、糖尿病、肺炎等。因此,旺盛的免疫能力是人体健康的重要基础。实践证明,来自大自然的天然物? A pair of new leather shoes need to be frequently oiled and maintained for a long period of time. The human body care and shoe shine are the same. Because of the arrival of middle-aged people, the body’s immune capacity began to decline, and especially the elderly’s resistance to various diseases was significantly reduced, and it is easy to cause colds, cardiovascular diseases, diabetes, pneumonia and so on. Therefore, strong immunity is an important basis for human health. Practice has proved that natural products from nature?