Do you feel like you have trouble with your short term memory? Like forgetting where you put your car keys or forgetting why you walked into a room. Could their be a cure? One Los Angeles chemical engineer thinks so. He says it comes in the form of chewing gum. NBC's Kelly Mack reports.

Has this ever happened to you? You walk in the grocery store, and then go blank on what you wanted to buy? Or do you sometimes forget where you put those car keys? Chemical engineer Brian English knows what we're talking about.

Brian English, Chemical Engineer: "I was getting senior moments. There's nothing worse than being in the middle of a business meeting and just literally spacing out."

English is the inventor of "Brain Gum," which he claims restores a naturally occurinng nutrient known as "p.s." to the neurons of the brain.

English: "P.S. is responsible for concentration in your brain. So as you lose P.S., you develop short term memory loss ... a set of keys, a pair of sunglasses you can't find."

English claims two pieces of his 'brain gum' deliver 85-milligrams of p.s. to your brain, and that over a short period, the p.s. lost through age is restored to the brain cells.

Rick Kanow swears by the gum. He lost more than 20-percent of his brain during surgery to remove a tumor.

Rick Kanow, Brain Surgery Patient: "It's changed my whole life around. I'm having memories of things from when I was 8 or 10 years old, that I'm not supposed to be having."

Designer Anita Reichenberg says the gum has helped her deal with the minutiae of her job.

Anita Reichenberg, Designer: "I'm less likely to think 'Oh my God!' Where did I put that piece of paper? I know where I put that piece of paper."

But Dr. Gary Small, who heads UCLA's center on aging, has his doubts about brain gum.

Gary Small, M.D., UCLA center on aging: "As far as I know this formulation of phos, delivered in gum form has never been tested in a double blind placebo controlled trial. So it's possible that people may chew this gum and have nothing more than a placebo effect.

Rick Kanow begs to differ.

Kanow: "I was watching Jeopardy with my daughter the other day, and I got most of the questions right. She's looking at me, like, 'Dad, you're not supposed to be able to do this!'"