"I feel like every day, I lose my memory more and more. It started when I couldn't find my car keys, sometimes I forget directions. My mother has Alzheimer's so I'm concerned," says Jerry Solowitz, a 63 year old man.

Ellen Lerner, 37, sometimes worries that she can't keep track of everything in her job as a public relations executive. "I feel like stress can get to me easily, and I worry because I forget simple things like where I put a file."

Should these people be concerned?

"Yes," says Lynda Toth, Ph.D., co-author with Pavel Yutsis, M.D., of Why Can't I Remember? Reversing Memory Loss (Avery, 1999).

Jerry should start a specific program with a health practitioner who specializes in memory loss, due to lots of unsuspected new causes for memory dysfunction. Ellen needs to make lifestyle changes, as stress can definitely lead to memory loss.

"Cortisol, which is one of the stress hormones, can be harmful because it keeps calcium in the memory pathway too long and destroys the neurons, which is very damaging to the brain," notes Toth.

Why Does Memory Fail?

Memory fails for several reasons, says Augustine DiGiovanna, M.D., author of Human Aging: Biological Perspectives, (McGraw-Hill 2000), and Professor of Biology at Salisbury State University in Salisbury, MD.

Normal Aging: Much of diminished memory as we age is due to reduced blood flow to the brain from atherosclerosis, which is hardening and narrowing of the arteries. Decreased blood flow causes neurons to shrink and function less effectively.

Also, as we age we lose neurons and neuron connections that can lead to memory loss. So the way people think, how much they remember, and the mental activities they do determine how many brain cells survive through the years.

Finally, as people live longer, the chance is greater that the body's immune system and other defense mechanisms won't be able to protect against certain diseases that affect the brain and memory (Parkinson's, strokes, Alzheimers, atherosclerosis).

A Starving Brain: The brain is not getting fed the nutrients it needs (vitamins, minerals, amino acids, glucose). Without the right "food" the brain's energy levels become lowered and stop powering the memory cells. Then, free radicals can do more dirty work and continue to rust memory cells.

Drink And Sink: Alcohol passes through the blood-brain barrier and slows down the processing of information between memory neurons. Memory loss increases over time, as memory tissues shrink.

Sad Stories: Depression can imbalance the neurotransmitters and electrical charges of neurons.

Tense and Tight: High blood pressure can constrict and narrow blood vessels, limiting blood and oxygen flow to the brain.

Memory-Sustaining Supplements

One way to boost brain power is to take the right supplements.

Ginkgo biloba: The powerful medicinal herb ginkgo biloba increases blood flow and circulation to the head by dilating blood vessels in the brain, allowing more oxygenated blood to get to the neurons. It also protects against free radical damage.

Research: Ginkgo biloba extract displayed a significant effect on helping the mental abilities of people 50-59 years old (Phytotherapy Research 13, 1999: 408-415).

Pregnenolone: This powerful hormone regulates the balance between excitation and inhibition in the nervous system and helps enhance memory and brain function, possibly by repairing a fatty substance that is part of the myelin sheath that surrounds nerve cells. Research: A St. Louis University School of Medicine study on mice showed that pregnenolone enhanced memory and helped mice to navigate mazes better.

Huperzine A: This herbal supplement is derived from club moss found in China; in purified form it inhibits the enzyme that breaks down acetylcholine, a neurotransmitter produced in the brain that you need for memory.

Research: Studies conducted by Alan Mazurek, M.D., found that huperzine A in purified form improves memory, enhances focus and concentration and has been used to improve memory loss in Alzheimer's patients (Alt. Ther. in Health Med. 5 [2], March 1999: 97-98).

Another study in The Journal of Neuroscience Research showed that huperzine A is a potent inhibitor of cholinesterase, which penetrates the brain and produces a dose-dependent increase of the neurotransmitters acetylcholine, norepinephrine and dopamine in rat cortex (41, 1995: 828-835).

Phosphatidylserine (PS): This substance, which occurs naturally in nerve cell membranes, helps keep fatty substances soluble and cell membranes fluid and helps reduce levels of cortisone which are damaging to tissues.

Research: Phosphatidylserine encourages a sense of calm by raising the levels of alpha brain waves and increasing the production of acetylcholine (Neuropsychobiology 24, 1990-1991: 42-48).

Vitamin E: This potent antioxidant attaches to bad cholesterol and helps prevent free radical damage to cells.

Research: Age-related processes like memory function and problem solving can be affected by free radical damage. Several studies show that vitamin E might slow the effects of Parkinson's disease and Alzheimer's disease (JAMA 282, August 18, 1999: 621). Acetyl-l-carnitine: Increases cognitive performance because it rejuvenates cellular membranes of mitochondria, the storehouses of energy contained in every living cell.

Alpha-Lipoic Acid: Preserves memory tissue by increasing glutathione levels, which protect fat stores in neurons from being damaged.

Nine Ways to Remember

Dr. Lynda Toth suggests the following ways to make the most of what you've now got.

1) Power Up Your Smile. Remove dental fillings and replace them with porcelain or ceramic ones. The mercury in metal fillings may be harmful (some believe) and can affect the brain and nervous system, inflaming memory tissue and preventing the entry of nutrients into the cells.

2) Don't Be a Tin Man/Woman Avoid exposure to aluminum. Don't use aluminum pots to cook in. Aluminum accumulates in memory tissue, damaging cells. In fact, autopsies of Alzheimers patients show they have unusually huge amounts of aluminum in the brain. But no one knows where this aluminum comes from.

3) Eat Right. Eat organic and pesticide-free foods. Pesticides get into the cells and can damage DNA.

4) A Matter of Taste. Avoid foods with artificial coloring, monosodium glutamate (MSG, often called "natural flavors" or "natural seasoning"). Also avoid processed foods with taste enhancers called exito toxins such as l-cysteine and aspartic acid.

5) In the Raw. Make sure that your diet consists of enzyme-rich 50% raw foods (fruits and vegetables) to feed the brain. Eat less animal fats.

* Drink green juices to support levels of the brain's clean-up enzymes.

*Eat lots of fiber, which helps remove toxins from the body. Pick up psyllium fiber.

*Limit intake of processed sugar, caffeine and alcohol to lessen the load on the liver and pancreas.

6) Cut Bait. Watch the fish that you eat. Lots of ocean and inland-caught fish are contaminated with mercury. Go for deep, cold water fish such as cod. Avoid shark and swordfish.

7). Oil Up. Supplement your diet with omega-3 fatty acids, such as cod liver oil or flaxseed oil. These fats lubricate memory cells.

8) Work That Body. Stay fit and exercise. Exercise helps oxygenate the body, reduces cholesterol, and builds and energizes new memory cells which reduces wear and tear on the brain function.

9) Do Mind Games. Read, listen to music. Tune into different radio stations than the ones you normally listen to. Do crossword puzzles and a wide selection of word games which can stretch your brain and give it a tough workout.

Student of Life

You need to keep learning your whole life to keep your brain and memory in tip top shape. The brain is adaptable, and you are always building new neurons, says Dr. Toth, which means that there is no limit to how long it can develop. Anything that stimulates the brain will help it to grow. That's why as you get older it's even more important to take classes, start a new hobby, travel. In fact, the challenge of learning and doing new things (without stopping in a fit of frustration) causes your brain to grow, says Dr. Mazurek.

The Good News

As people get older, their brains may actually improve and repair themselves through a complicated process that is designed to eliminate faulty neurons that are prone to making mistakes. At the same time, brain activity goes on that results in the development of new and improved connections with neighboring neurons.

Research also shows that memory improves if you train people to have faith in themselves. (The brain helps those who help themselves.) Apparently, a confident perspective can encourage the brain to actually improve to the point where its new-found abilities may increase to the point where it fulfills expectations.

So keep your chin up and stay away from the artery-clogging saturated fat that can cut off the brain's blood supply. It's all in the attitude, says Dr. DiGiovanna. And, of course, the key to a long and happy life with your brain is also on the end of your fork and in that bottle of supplements.