Prevention is better than cure: It is true because, when you suffer from a disease, your body may get effected by the disease permanently some times. The disease may also make you weak for some time.All this will be effecting your efficiency of doing work.You may also be spreading the disease to some one else in your family if it is an infectious disease.
Money and time also will be wasted due to the disease.So always it is better to prevent a disease than suffering from it