If you forget small things, do not take it lightly because you may have Alzheimer's disease. Regarding Alzheimer's disease, most people believe that this disease occurs only to the elderly, but it is not so. Many researches have revealed that after thirty years, Alzheimer's disease starts catching people. It is a genetic disease. But people can also have Alzheimer's due to poor lifestyle.Alzheimer's is a disease of amnesia. There is a problem like lack of memory, inability to decide, difficulty in speaking. It is common to have Alzheimer's in old age. As we get older our memory starts decreasing. We start forgetting things. Women have more Alzheimer's disease than men.