“They are called smart pills or brain boosters or, to use the preferred pharmaceutical term, cognitive enhancers.

But whatever the name given to compounds created to prevent or treat memory loss, drug companies and supplement producers — eager to meet the demands of a rapidly growing market — are scrambling to exploit what they view as an enormous medical and economic opportunity.

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Much of the excitement among pharmaceutical companies, which have dozens of drugs in development, stems from advances in clarifying some of the brain processes and biochemical pathways that can hinder or help memory storage and retrieval, said Dr. Paul R. Solomon, a professor of psychology at Williams College…

But it will probably be at least five years before any of those drugs meet the standards for approval by the Food and Drug Administration, researchers said.

Clearly, the market for memory enhancers is growing with the aging of the population.

Dr. Steven T. DeKosky, a professor of neurology and psychiatry at the University of Pittsburgh School of Medicine, says he has noticed a marked increase in anxiety among baby boomers, who are watching their parents descend into Alzheimer’s and hoping that new medicines will help them avoid the same fate…

Even among those who are already suffering memory loss, Alzheimer’s is far from the only source. An estimated four million Americans have it, but millions more suffer from other disorders that can lead to dementia, including Parkinson’s disease, multiple sclerosis, stroke, head trauma and schizophrenia.

Experts estimate that an additional four million people have a syndrome called mild cognitive impairment, which may progress to Alzheimer’s. People with the impairment can function on their own but have gaps in their memories.” NY Times