Chances are you’ve walked into a room and forgotten why you went there; misplaced your keys or eyeglasses at least a few times. We’ve all done it in our life whether we were younger or older.

Chances are you’ve walked into a room and forgotten why you went there; misplaced your keys or eyeglasses at least a few times. We’ve all done it in our life whether we were younger or older.

Occasional forgetfulness is a normal part of life that becomes more common as we grow older. In most cases, it’s no cause for alarm unless it begins to hamper daily activities. Forgetting where you left the car keys is one thing; forgetting what they do is quite another.

Over the past few years, scientists have learned a lot about memory and why some memory problems are serious but others are not.

As we age, changes occur throughout the body, including the brain. You may begin to notice that it takes longer to learn new things. You can’t remember information as well as before, or you may misplace things. These memory lapses may be signs of normal aging. But if increasing forgetfulness begins to worry you, it’s a good idea to check with your doctor. If a medical problem exists, it’s best to start treatment as early as possible.

Several underlying causes can bring about memory problems. Forgetfulness can arise from stress, depression, or lack of sleep. You may see this in young people who have several activities at school or work occurring close together.

Other causes include side effects from certain medicines, thyroid problems, an unhealthy diet or not having enough fluids in your body (dehydration). Taking care of these underlying causes may help resolve your memory problems.

For some older people, though, episodes of memory loss may be a sign of a more serious problem called dementia. Two of the most common forms of dementia in older people are Alzheimer’s disease and multi-infarct dementia (or vascular dementia).

Alzheimer’s disease can be suspected when memory loss begins slowly and gets worse over time. People with Alzheimer’s disease have trouble thinking clearly.

They find it hard to do everyday things like shopping, driving, cooking or having a conversation. Medications can help during the early or middle stages.

As the illness progresses, though, patients may need someone to take care of all their needs.

Vascular dementia also causes serious memory problems. But unlike Alzheimer’s disease, the signs of vascular dementia may appear suddenly.

This is because the memory loss and confusion are caused by small strokes or changes in the blood supply to the brain.

Further strokes can make the situation worse. Taking care of your high blood pressure can lower your chances of getting this illness. You don’t have to be a senior citizen to suffer from high blood pressure or stroke. Dr. Tudor Jovin, with the University of Pittsburgh Medical Center, said about 10 percent of stroke victims are under 50. Some are even infants.

It is important to seek medical care if you experience memory loss that is persistent and you cannot pinpoint the cause of the memory loss.

Have your blood pressure checked at any age. Again, prevention is the first step to better health.