• Chemical: The change in the amount of natural chemicals in the brain can cause brain cells to degenerate.
• Genetic: Several family members can develop the disease.
• Autoimmune: The body’s immune system may begin to attack its own brain cells.
• Slow Virus: A virus that cause some of the brain disorders that closely resemble Alzheimer’s disease.
• Blood Vessel: Defects in blood vessels supplying blood to the brain.

• Have problems remembering things
• Not able to perform routine tasks
• Have difficulty understanding simple things
• Seem disoriented
• Have problems with their speech
• Become anti-social
• Have changes in their personality
• Wander around
• Lose bladder and bowel control
• Dress inappropriately
• Be unable to care for themselves

Alzheimer's patient should avoid high fat and high calorie diets. They must also abstain from salt, alcohol, cigarette smoking, processed foods, refined carbohydrates and environmental toxins. Inflammatory agents like anti-oxidants are also beneficial for Alzheimer's patients. Therefore patients with Alzheimer's disease must eat a diet which contains antioxidants like vitamin A, vitamin C, green tea and so on.