Five effective tips that can boost cognitive function
Neurologist Dr. Richard Isaacson and nutrition-expert Dr. Christopher Ochner note that not only what you eat but when you eat can affect your cognitive function. Surprisingly, they explain that dining early and fasting for 12 hours before your next meal can boost your brainpower. They have written a book, The Alzheimer’s Diet, that may significantly improve memory function in patients with Alzheimer’s disease (AD) and those with mild cognitive impairment (MCI). In addition, they suggest that their Alzheimer’s diet can ward off the development of Alzheimer’s disease in the first place.
Gleaned from their new book are five memory-boosting dietary recommendations, based on the latest scientific research and clinical experience treating patients with AD and MCI:
1. Fast 12 hours at night
If you take advantage of “early bird specials,” having supper at the diner between 4 and 6 p.m., you may have unwittingly stumbled upon a brain health secret: the 12-hour nightly fast. If you routinely wake up at 6 a.m., try to eat your last meal by 6 p.m. the night before. There is scientific evidence that substances called ketone bodies, which are produced when there are no carbohydrates to burn for fuel, may have a protective effect on brain cells. This means no late-night snacking between dinner and breakfast.
2. Proportion your fat-carb-protein intake
Every day, make sure you aim for 25% of your total calories from brain-healthy good fat, which includes olive oil, avocados, certain nuts, natural peanut butter, certain seeds, and certain fish. Limit your intake of bad fats (most fast foods, anything hydrogenated, dried coconut, butter, animal fats, milk chocolate and white chocolate, and cheese). Consume 30-45% of your daily calories from complex carbohydrates (fruits, vegetables and whole foods that are low on the glycemic index), and wean yourself off high glycemic carbs (sugars, high-fructose corn syrup, processed cereals and grains, anything baked, whole milk and cream, ice cream and sorbet, crackers, salty snacks such as chips and pretzels, and anything made with white flour). Finally, get the other 25-35% of your calories from high-quality lean protein.
3. Boost your brain nutrients
Omega-3 fatty acids (DHA and EPA) are essential for memory function and brain health. Most of us don’t get enough from dietary sources (such as fish), so consider high-quality, pure fish oil supplements that contain a minimum of 250 mg of DHA in each capsule, and aim for 1,000-1,500 mg of DHA daily if approved by the treating physician. Antioxidant-rich foods are also great for mental function. Some of the best are berries, kale, 100% pure unsweetened cocoa powder, mushrooms, onions, beans, seeds, sardines, herring, trout, and Alaskan wild salmon. Finally, ensure adequate intake of folic acid, B6, B12, and vitamin D in particular. If you’re not eating vitamin-rich foods on a regular basis, it’s good to supplement as needed in pill or liquid form.
4. Eat whole foods, Mediterranean style
A brain-healthy Mediterranean-style diet includes fruits and vegetables, lean protein (fish, chicken, and turkey); low-fat yogurt and cheeses; and grains, nuts, and seeds. Stay away from red meat and processed foods. Get in the habit of eating whole foods. What are whole foods? They’re foods that have only one ingredient--for example, strawberries, broccoli, or barley. If you must have a convenience (manufactured) food on occasion, find those packaged, canned, and frozen items with the fewest ingredients--especially ingredients that you readily recognize and understand.
5. Enjoy coffee and pure cocoa
Good news for coffee lovers! Caffeinated coffee, 1-3 cups early in the day, may be beneficial over time to your brain. Studies done in Europe over several years demonstrate that men who drank coffee regularly for many years showed less of a decline on memory tests than those who did not drink coffee. More good news: An exciting new study released August 2012 showed that patients with mild cognitive impairment who had regular intake of the strong antioxidants found in pure dark cocoa powder had improvement in memory function.
About the authors:
Richard Isaacson MD is a specialist in neurology who received his training at Harvard Medical School. He is an associate professor of clinical neurology specializing in Alzheimer’s disease and other memory and cognitive impairments at the University of Miami Miller School of Medicine. Dr. Ochner is a leading researcher on nutrition and the brain at Mount Sinai School of Medicine and the New York Obesity Nutrition Research Center (Columbia University College of Physicians & Surgeons).