The function in our bodies will start changing from teenage. The function of brain , eyes , ears, mouth, smell , heart , liver , lung , kidneys, colon , metabolism will decline that affect to the productive organ , blood ,cells and so on. If you want to slow your aging , you have to exercise , eat the right food and go to see the doctor. The doctor will recommend you to maintain your health.
    The disease that affect the elder people always continue from the young . If the younger has a thyroidal problems, they will feel cranky ,gain weigh and so on. When they get  old , they may go into depression . If the doctor observe that the older people feel depressed, confused , withdrawn, fatigue or lose some memory. They may have the Alzheimer’s disease so the people around them have to understand their changing.
    Older people are the main person who has more change to get an  Alzheimer’s disease, Aortic aneurysm , atrophic arthritis. These disease causes them back into infancy and finally die. And sometime , the old people will get some problems of sexual intercourse. They may get pain and lose the sensation.
    The doctor get the important information from the study in the groups of the old one. This information will help the doctor understand symptoms of the disease.
    The older people will get the bedsores , this disease will cause the skin to breakdown and cataracts, which cause the losing of vision. Most of men will get prostate hyperplasia that make the glands to expend bigger, the urine will be blocked.
    Although it is impossible to control the aging , but we can slow it. You have to learn the ways to prevent our bodies and health. You have to understand what you are and try to avoid things that make you unhealthy . You will have a good health a long with your aging. The older people have to face with the body changing and it leads to some cancer like leukemia and others disease such as diabetes type two , glaucoma, hypothyroidism , arthritis , and Parkinson. If you don’t contact with these disease , you have to behave yourselves carefully.