自然界中存在着酸碱平衡的关系,如人为地破坏了这种平衡,人类就会受到大自然的惩罚,酸雨就是人类活动造成大气污染所致,已影响到人们的健康。在美容护肤中,也不能忽视酸与碱的平衡。在健康状态下,人类的体液呈弱碱性,如果摄入太多的酸性食物,就会影响营养的均衡吸收,体内的血液将倾向于酸性,造成血液循环恶化,形成酸性体质,使机体新陈代谢降低,抗病能力下降,易患各种疾病。而酸性的内环境更会导致身体健康状况不佳,直接影响皮肤的滋润与光滑,并使人更容易感到疲倦和精力不足,特别嗜肉者易长雀斑、长痣且皮肤变黑也与酸性体质有关。因此,要保持机体的偏碱性环境,就要了解各类食物的酸碱性,一般粮食类(大米、面粉、玉米等)、肉类(猪、牛、羊等)、禽类(鸡、鸭、鹅等)、水产类(鱼、虾、贝等)、蛋类、花生、核桃、糖类、用谷物酿制的酒等,含磷、硫、氯等元素较多,都是酸性食物;而蔬菜、水果、牛奶、红薯、土豆、海带、豆类、香菇、黄瓜等,含钾、钙、 There is a balance of acid-base in nature. If man-made destruction of this balance, mankind will be punished by nature. Acid rain is caused by air pollution caused by human activities and has affected people’s health. In the skin care, you can not ignore the acid and alkali balance. In a healthy state, human body fluids are weak alkaline, if taken too much acidic food, it will affect the balanced absorption of nutrients, the body’s blood will tend to acidic, resulting in deterioration of blood circulation, the formation of acidic physique, the body metabolism Reduce, reduce the disease resistance, susceptible to various diseases. The acidic environment can lead to poor health, directly affect the skin’s moisture and smooth, and make people more likely to feel tired and lack of energy, especially addicted to easy to grow freckles, mole and dark skin and acidic Physical related. Therefore, to maintain the body’s alkaline environment, we must understand the various types of food acid and base, the general food (rice, flour, corn, etc.), meat (pigs, cattle, sheep, etc.), poultry , Geese, etc.), aquatic products (fish, shrimp, shellfish, etc.), eggs, peanuts, walnuts, sugars and wine brewed with cereal. Phosphorus, sulfur and chlorine are more acidic foods. The vegetables, fruits, milk, sweet potatoes, potatoes, kelp, beans, mushrooms, cucumbers, potassium, calcium,