People normally think of fruits and vegetables as the richest sources of the antioxidants known as polyphenols, but a recent study reports that whole-grain popcorn is an even richer source. A serving of popcorn – the only snack that is 100 percent unprocessed whole grain – packs 300 mg of polyphenols, compared to 114 mg per serving of sweet corn and 160 mg per serving of all fruits. The hulls of popcorn have the highest concentrations of polyphenols and fiber. But the researchers cautioned that though popcorn is nutritious, adding butter, salt and other high-calorie flavorings can turn the snack into a nutritional nightmare. They recommended eating air-popped popcorn for the lowest calorie count. Microwave popcorn and popcorn popped in oil both have twice as many calories as air-popped.
"Don't Forget to Eat Your Fruits, Veggies ... and Popcorn?", News report, HealthDay, March 27, 2012
Dutch research finds a correlation between the size of a bite of food and the strength of the aroma of that food, suggesting that aroma could provide a way to control portion size. Manipulating the odor of food could lead to a five to 10 percent decrease in the size of a bite consumed. For the study, participants were able to control portions of a custard-like dessert by pushing a button. Bite size was linked to aroma for the first and subsequent bites: the stronger the smell, the smaller the bite.
"Food aroma affects bite size", Flavour, March 21, 2012
Using high-throughput chemical screening systems and robotics, U.S. researchers tested 4,000 chemicals for their impact on DNA, finding that 22 antioxidants actually damaged DNA. Three of the antioxidants – resveratrol, genistein and baicalein – are marketed or being studied as treatments for a variety of disorders, including heart disease, type 2 diabetes, osteopenia and osteoporosis and chronic hepatitis, as well as serving as an anti-aging treatment. However, in addition to damaging DNA, some antioxidants actually destroyed dividing cells, including tumor cells. The researchers warned that this surprising ability may be good for treating cancer, but not so good for treating other disorders, including diabetes.
"High-throughput genotoxicity assay identifies antioxidants as inducers of DNA damage response and cell death", Proceedings of the National Academy of Sciences, March 19, 2012
Researchers have determined that there are five basic dietary patterns in the U.S., each of which is linked to demographic factors, including age, race, region, gender, income and education. The patterns were discovered through analysis of 21,636 questionnaires completed by black and white adults aged 45 and older. The five patterns are: southern (fried, processed meats, sugary drinks); traditional (Chinese and Mexican food, pasta, pizza, soup); healthy (fruits, vegetables, grains); sweets (snacks and desserts); and alcohol (proteins, alcohol, salads). The researchers found that blacks were more likely than whites to eat a southern dietary pattern and did not eat the alcohol pattern. And men, lower-income people and non-college graduates were more likely to follow the southern pattern.
"Dietary Patterns Exist Among US Adults Based On Demographics", News release, presentation at the American Heart Association scientific sessions, March 13, 2012
People who are overweight can improve the expansion capability of their arteries and reduce the risk of cardiovascular disease by losing weight, especially in the belly area, on either a low-fat or low-carb diet, a U.S. study has found. For the study, 60 men and women who weighed an average of 215 pounds went on either a low-fat or low-carb diet for six months. Those on the low-carb diet lost an average of 28.9 pounds; those on the low-fat diet lost an average of 18.9 pounds. The researchers then measured arterial constriction after weight loss, finding that the amount of improvement in blood vessels was directly linked to how much belly fat was lost, regardless of the diet they were on.
"Losing Belly Fat Whether from a Low-Carb or a Low-Fat Diet, Helps Improve Blood Vessel Function", News release, presentation at the American Heart Association scientific meeting, March 13, 2012
U.S. researchers who analyzed health data from nearly 43,000 men found that those who drank a 12-ounce sugary beverage every day were 20 percent more likely to experience heart disease than those who didn’t drink sugary beverages. Participants were mainly white males, aged 40-75 years, employed in a health-related profession. The researchers said the study’s findings add to the growing evidence that sugar-sweetened beverages “are detrimental to cardiovascular health.” The study found no correlation between consumption of artificially sweetened beverages and an increase risk of biomarkers for heart disease.
"Sweetened Beverage Consumption, Incident Coronary Heart Disease and Biomarkers of Risk in Men", Circulation, March 12, 2012
|
British Medial Journal (BMJ), March 15, 2012
|