Generally speaking, forgetfulness comes to mind first.
Every forgetfulness does not mean alzheimer's disease. Sometimes insomnia, sometimes too much fatigue of the brain, sometimes can cause stress forgetfulness. Apart from the factors other than those mentioned above, there may be alzheimer's disease. Early diagnosis of Alzheimer's disease prevents the progression of the disease and the progression of the disease in later times.
Read a book to prevent Alzheimer's disease, take care of something to improve your brain.
And how much forgetful are you?