Chocolate May Boost Brain Power and Fight Fatigue

The next time your energy slumps, but you need to be sharp, a cup of hot chocolate might be just the boost you need.

That’s because flavanols, which are chemicals plentiful in dark chocolate, fight fatigue and hone mental sharpness, according to scientists at the Brain, Performance and Nutrition Center at Northumbria University in Newcastle, UK.

Researchers gave 30 people a series of math tests before and after having either a flavanol-loaded chocolate drink or a placebo beverage. On a test that required repeatedly subtracting numbers, volunteers who got the flavanol-rich drink performed better than those drinking the dummy drink. In addition, the flavanols seemed to offset the fatigue from the intense mental concentration.

“We asked them about their mental fatigue, and that increased, but the cocoa offset that increase,” said researcher Crystal Haskell.

The brain-boosting effect is tied to flavanols’ ability to dilate blood vessels, allowing more blood to reach important areas of the brain.

The study also found that a 500 mg dose of flavanols worked best. That’s the equivalent of five bars of chocolate, so researchers are trying to discover whether lower levels work as well.

“The amounts we were giving them were more than you would get from eating small amounts in diet,” said co-researcher David Kennedy, “But there is quite a bit of evidence showing that general consumption over time is protective against neurodegenerative disease and decline in cognitive function.”

Flavanols are also found in red wine, olive oil, broccoli, blueberries, tea, and onions. They’ve been linked to lowering the risk of cardiovascular disease, diabetes, and brain function.

Editor's Note:

Help stop brain shrinkage by exercising your brain; stretch your brain with new challenges, word and number games & puzzles, and by using your memory store: like writing a book, organizing old photos with information or lecturing and teaching about history and past events within your lifetime stored in your memory bank.

Olive Oil for a Flat Belly

That bagel? It could go right to your gut. Literally. But a bit of olive oil each day may help keep your middle little. 

That's what researchers are saying after testing two diets -- one high in carbs and the other based on healthy fats from olive oil. The "fat" diet kept bellies flatter. 

Why Belly Fat Is So Bad
Besides making you sad when you zip up your pants, excessive abdominal fat increases your risk for high blood sugar and many other health problems. But in a recent study of overweight people, a Mediterranean-style diet -- where approximately 30 percent to 40 percent of the calories came from unsaturated fats, like those in olive oil -- seemed to help prevent tummy-expanding over time. Another bonus: The fat-focused diet helped people maintain better insulin sensitivity, too. Not so with the high-carb diet, which seemed to encourage body fat to relocate to people’s bellies.

Weight Loss Arithmetic
Keep in mind that extra olive oil isn't going to help you trim your middle. It could just help keep your pants from getting tighter. For serious waist whittling, you'll need two must-do's: a healthy diet and extra exercise.