水是生命之源,地球的表面70%是水,人类身体内70%左右也是水。水是人类赖以生存的物质基础,一旦机体丧失水分至20%时就无法维持生命。对于老年人,保证体内的液体平衡是保持生命活力的先决条件。由于老年人反应缓慢迟钝,造成口渴感减退,因此容易引起摄入水分不足而使机体缺水,甚至脱水,从而相继引发各 Water is the source of life, 70% of the earth’s surface is water, and about 70% of human body is water. Water is the material basis for human beings to survive. Once the body loses moisture to 20%, it can not sustain life. For the elderly, ensuring fluid balance in the body is a prerequisite for maintaining vitality. As the elderly slow and slow response, resulting in decreased thirst, it is easy to cause inadequate intake of water and make the body lack of water, or even dehydration, which have triggered each