不能等口渴才喝水水是维持人体生命活动正常运转和防病健身最重要的物质。水摄入不足,不但精神不振,口干舌燥,浑身无力,而且肝肾功能下降,毒性物质积蓄,病魔就会乘虚而入。口渴,提示体内缺水已颇严重。不能等病了才体检每年定期到医院做一次全面体检对中老年人来说是预防保健的重要 Can not wait for thirst before drinking water is to maintain the normal functioning of human life and disease prevention and fitness the most important material. Insufficient water intake, not only lackluster, dry mouth, weakness, and liver and kidney function decline, the accumulation of toxic substances, the disease will take advantage of. Thirst, suggesting that the body of water has been quite serious. Can not wait for a sick before physical examination every year to the hospital to do a comprehensive physical examination is important for the prevention of health in the elderly