“American adults just keep getting fatter,” proclaimed the New York Times headline on March 23rd. “New data shows that nearly 40 percent of them were obese in 2015 and 2016,…
“Want to lose weight? Then run, don’t walk,” reported U.S. News & World Report in the April 2013 issue.
When it comes to running vs. walking, the Lawrence Berkeley National Laboratory in California conducted a six year National Walkers’ and Runners’ Health Study. When they compared men and women who increased their walking or running, they found that running expended more energy than walking.
But people who choose to run may be different—they may be more physically fit, for example—than people who choose to walk.
The benefits of polyunsaturated fats in your diet may include lower levels of inflammation and less buildup of plaque in arteries. This is important, because “Inflammation plays two key roles in coronary heart disease,” explains Penny Kris-Etherton of Pennsylvania State University.
First, it helps build the plaque that narrows arteries. The process starts when the immune system mobilizes to heal an “injury” in the artery wall, often caused by oxidized LDL cholesterol. Smoking, high blood pressure, and high blood sugar can also damage the arteries and lead to plaque buildup.“
And every single step of the way, inflammatory signals produced in the plaque fuel the process,” says Kris-Etherton. After decades, the plaque—now filled with cholesterol, calcium, and cell debris—gets covered with a fibrous cap of smooth muscle cells. Then, once again, inflammation wreaks havoc.
Sitting for hours on end can hurt more than your back end, say two studies.
British researchers tracked 153 younger and 725 older adults who all had risk factors for diabetes. Each participant wore an accelerometer to measure how much time he or she spent sedentary or engaged in moderate-to-vigorous exercise (like running or brisk walking) for at least a week. The results helped researchers hone in on why sitting is bad for people who are at risk for health problems such as diabetes.
“We’ve known for a long time that if you reduce the calorie intake of rats or mice, they live much longer,” says Mark Mattson, chief of the laboratory of neurosciences at the National Institute on Aging (NIA) in Baltimore. Do these intermittent fasting benefits carry over to humans?
What happens in species closer to humans is more complicated. Rhesus monkeys fed 30 percent fewer calories lived longer in a study at the University of Wisconsin, but not in a study at the NIA.
Does it matter if you walk slowly instead of briskly for exercise? Is 30 minutes a day of slow walking good enough, or are you better off walking for an hour?
It depends on what your goals are, says Robert Ross, an exercise physiologist at Queens University in Kingston, Ontario.
“Mediterranean diet fights heart disease,” announced ABC News. “Mediterranean diet cuts risk of stroke,” said USA Today. “Mediterranean diet over low fat? Well, at least it’s more fun,” quipped the Los Angeles Times. A study published in the prestigious New England Journal of Medicine set off a media frenzy in February. Its findings were striking, but the press reports may have misled many. Here’s what the study actually found…and how it should (or shouldn’t) alter what you eat.
Whole grains, leafy greens, nuts, and beans. All are linked to a lower risk of type 2 diabetes and all are rich in magnesium. What’s more, people who get more…
“More than 100 epidemiological studies have looked at the risk of breast cancer and physical activity,” says Heather Neilson, a Canadian exercise researcher at Alberta Health Services in Calgary. “The…
It’s not often that you get a glimpse into the underbelly of the world of supplement marketing. But here, thanks to the U.S. Federal Trade Commission, is a blow-by-blow account…