Have you ever had someone say to you, "food for thought"? The phrase generally refers to something said that suggests that it will contribute to your better understanding of any given issue in greater detail.

It has long been believed that brain teasers such as crossword puzzles or the game of chess contribute to protecting the brain from aging. It is also now believed that eating the right foods are especially good in maintaining the delicate nerve cells and blood vessels and keeping them from the decay that naturally occurs as we all get older. Some of the foods that help the human body stay focused and young are fresh fish such as salmon, sardines and herring. A study from the Rush Institute for Healthy Aging in Chicago published in Psychology Today found that "people who eat at least one fish meal a week are significantly less likely to end up with Alzheimer’s disease than those who regularly eschew fish".

It is recommended by nutrition experts that we should all enjoy more fruits, vegetables and whole-grain foods. A diet of calcium-rich foods and fewer high-fat foods helps the human stay healthier. Also according to the American Dietetic Association, eating nutritiously and staying physically active can slow down the physical signs of aging. Other dietary enhancers for slowing the aging process include red wine, garlic, olive oil, whole grains and brown rice. Peanuts, walnuts, almonds, dark green leaf spinach and fruits such as blueberries, bananas and strawberries are also reportedly good for the brain.

Better yet, if you are looking for that proverbial "fountain of youth", an extensive study of 11,178 seniors aged 67 to 109 by the National Institute of Aging found that "seniors who supplement with Vitamin E are less likely to die prematurely". Many researchers from the National Institute of Aging to Tufts University to the University of Arizona College of Medicine have found that Vitamin E may help slow the aging process. So, there you go, not only food for thought, but the fountain of youth. Indeed, we are what we eat, therefore, you better eat right.