Misplacing your keys could be a normal part of aging. As people get older, changes occur in all parts of the body, including the brain. As a result, some people may notice that it takes longer to learn new things, they don’t remember information as well as they did, or they lose things like their keys. These usually are signs of mild forgetfulness, not serious memory problems.
Emotional problems, such as stress, anxiety, or depression, can make a person more forgetful and may be mistaken for dementia. Some health issues, such as medication side effects, vitamin B12 deficiency, chronic alcoholism, tumors, and blood clots in the brain can cause memory loss or possibly dementia. A doctor should treat medical conditions like these as soon as possible.