Alzheimer's is a gradual mental decline that destroys cognitive abilities over time. It progresses from mild forgetfulness to severe memory loss and inability to perform basic tasks. While the exact cause is unknown, risk factors include age, family history, head injuries, and medical conditions. Symptoms start with memory loss and confusion and worsen to include changes in personality and behavior. Home remedies like consuming carrots, fish, and vitamins E and B may help curb Alzheimer's progression, though it currently has no cure.