The 4 Safest Sugar Substitutes and a Few to Avoid Completely

The best and safest artificial sweeteners are erythritol, xylitol, stevia leaf extracts, neotame, and mon fruit extract—with some caveats:

• Erythritol: Large amounts (more than about 40 or 50 grams or 10 or 12 teaspoons) of this sugar alcohol sometimes cause nausea, but smaller amounts are fine. (Sensitivities vary among individuals.) Erythritol, small amounts of which occur naturally in some fruits, is about 60 to 70 percent as sweet as table sugar and has at most one-twentieth as many calories. Unlike the high-potency sweeteners, erythritol provides the bulk and “mouth feel” of sugar.

• Xylitol: This sugar alcohol, which occurs naturally in birch and some other plants, is about as sweet as table sugar and has about three quarters of the calories. Too much xylitol (about 30–40 grams or 7–10 teaspoons, although sensitivities vary) could produce a laxative effect and/or gastrointestinal distress.

Why Sitting is Bad (And How to Get Off Your Duff)

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.

Is Paleo Healthy? Should We Be Eating Like Cave Men and Women?

“If it wasn’t on a caveman’s menu, it shouldn’t be on yours.” That’s the basic premise of a Paleo diet. The question remains, as it should for any diet—is Paleo healthy?

Maybe you’ve heard of the Nordic diet, the Mediterranean diet, and more recently, the gluten-free diet, but these are all very different from the primal diet known as Paleo.

But is the Paleo diet healthy?

Do Intermittent Fasting Benefits Include Living Longer?

“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.