The 13 Biggest Nutrition and Food Myths Busted

The most persistent nutrition myths are those that contain at least a kernel of truth and some myths help us get to real dietary wisdom that actually might help our health. Here’s a cold, hard, science-based look at some of the most oft-repeated ones and what really is the truth behind them.

Myth 1: Eggs are bad for your heart

The Truth: Eggs do contain a substantial amount of cholesterol in their yolks—about 211 mg per large egg. And yes, cholesterol is the fatty stuff in our blood that contributes to clogged arteries and heart attacks. But labelling eggs as “bad for your heart” is connecting the wrong dots, experts say. “Epidemiologic studies show that most healthy people can eat an egg a day without problems,” says Penny Kris-Etherton, Ph.D., R.D., distinguished professor of nutrition at Penn State University. For most of us the cholesterol we eat doesn’t have a huge impact on raising our blood cholesterol; the body simply compensates by manufacturing less cholesterol itself. Saturated and trans fats have much greater impact on raising blood cholesterol. And a large egg contains only 2 grams of saturated fat and no trans fats.

Myth 2: High-Fructose Corn Syrup (HFCS) is worse for you than sugar

The Truth: The idea that high-fructose corn syrup is any more harmful to your health than sugar is “one of those urban myths that sounds right but is basically wrong,” according to the Center for Science in the Public Interest, a health advocacy group. The composition of high-fructose corn syrup is almost identical to table sugar or sucrose (55 percent fructose, 45 percent glucose and 50:50, respectively). Calorie-wise, HFCS is a dead ringer for sucrose. Studies show that HFCS and sucrose have very similar effects on blood levels of insulin, glucose, triglycerides and satiety hormones. In short, it seems to be no worse—but also no better—than sucrose, or table sugar. This controversy, say researchers, is distracting us from the more important issue: we’re eating too much of all sorts of sugars, from HFCS and sucrose to honey and molasses. The American Heart Association recently recommended that women consume no more than 100 calories a day in added sugars [6 teaspoons]; men, 150 calories [9 teaspoons].

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