2012年4月30日 星期一

‘Healthy’ Foods that Really Aren’t: Nutritionists Weigh In


‘Healthy’ Foods that Really Aren’t: Nutritionists Weigh In

You'll be surprised at the list of health foods that some nutrition experts won't touch.

Reduced-Fat Peanut Butter

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | 21
Martin Jacobs / Getty Images
Martin Jacobs / Getty Images
“In my opinion, the only ingredient in peanut butter should be peanuts,” says Keri Gans, a registered dietitian in New York City and author of The Small Change Diet. “Reduced-fat [peanut butter] adds artificial sweeteners, only to save 0.5 grams of saturated fat per serving and 10 calories. The reduction simply isn’t worth it and the taste becomes too sweet, taking away from the delicious taste of peanuts.”
Cristina Rivera, a registered dietician and president of Nutrition In Motion PC, emphasizes further that not all fats are harmful. “Unsaturated fats such as nuts and peanut butter, seeds, avocado, olive oil and fish oil have numerous health benefits. Foods that contain these fats protect our heart, lower bad cholesterol while raising good cholesterol, and fight inflammation in our bodies,” says Rivera. People should keep that in mind when thinking about opting for low-fat or reduced-fat versions of foods, she says.
(MORE: FDA Recall: Is There Salmonella in Your Skippy?)
In moderation, nuts and nut butters can be healthy snacks that are high in magnesium and vitamin E. Magnesium protects respiratory health and vitamin E boosts immunity and helps protect the body from tissue damage and inflammation triggered by cancer-causing free radicals.
So, when choosing a peanut butter, Rivera recommends skipping the reduced-fat versions in order to reap the full benefits of peanuts’ heart-healthy fats. “Natural or organic is the best option, and if you’re worried about the high calorie content, just be sure to practice portion control — 1 to 2 tablespoons is a serving — and stay physically active.”
MORE: The Supernut: Walnuts Pack a Powerful Dose of Antioxidants

Frozen Yogurt

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | 21
Lesley Magno / Getty Images
Lesley Magno / Getty Images
Dessert is dessert and no sugary treat can ever really be considered “healthy,” but the low-fat frozen yogurt craze has many of us convinced it doesn’t count.
Katherine Booking, a registered dietician and co-founder of AppforHealth.com, cautions consumers that it does. “A lot of frozen yogurt places these days allow you to self-serve and you can easily end up doling out huge portions, then adding high-calorie toppings,” she says. “You could walk out of your favorite fro-yo shop with a 400-plus calorie treat; thinking you’re having a 100 calorie dessert.”
(MORE: Study: The Best and Worst Foods for Healthy Weight)
A common frozen-yogurt myth is that since it’s yogurt, it’s full of healthy probiotics that maintain digestive health and give your immune system a boost. But whether a given brand of frozen yogurt contains enough probiotic bacteria to actually have this beneficial effect depends on the manufacturer. According to Simin Nikbin Meydani, a professor of nutrition at the Friedman School of Nutrition Science and Policy at Tufts University:
Although the flash-freezing technique used in the production of frozen yogurt, unlike slow freezing in a freezer, should not kill the live cultures [and healthy bacteria in yogurt], there is no guarantee that this won’t occur.
As a result, the number of bacteria in frozen yogurt is usually lower than that in the yogurt it was made from. However, different yogurts and frozen yogurts are made with different types of live cultures and probiotics, and the levels that remain in frozen yogurt depend on the numbers that were in the yogurt and on the heartiness of the specific bacteria that was used.
To find out if your yogurt has a healthy helping of probiotics, you should read labels and look for the National Yogurt Association’s ”Live and Active Cultures” seals on yogurt containers. But, as far as Booking is concerned, “Overall, probiotics are not worth the calories in most frozen yogurt since you can get probiotics virtually calorie-free in capsules or in fat-free regular yogurt.”
So what’s Booking’s solution? “I’d rather opt for a small portion — about a half-cup serving — of the ‘real deal’: regular ice cream. If I’m going to indulge, I really want to enjoy my indulgence,” she says.
PHOTOS: Pictures of Ice Cream That Will Make You Scream



gluten
[名][U]グルテン, 麩(ふ)質 gluten breadグルテンパン(糖尿病患者用の消化のよいパン).

celiac[ce・li・ac]

  • 発音記号[síːliæ`k]
[形]《解剖学》腹の, 腹腔(くう)の.
━━[名]小児脂肪便症患者.

Gluten-Free Foods

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | +
Viktor Budnik / Getty Images
Viktor Budnik / Getty Images
For people suffering from celiac disease — an autoimmune condition — going gluten-free is not a choice, but a health must. The autoimmune condition causes people to have an immune reaction to gluten, a protein found in many grains like wheat, barely and rye, which leads to inflammation in the small intestine and prevents sufferers from absorbing certain nutrients.
Yet gluten-free diets have become trendy, even among those with no allergy to the protein, thanks to celebrities like Victoria Beckhman and Miley Cyrus swearing off gluten and claiming to feel healthier and fitter for it.

But “the bottom line is you only need gluten-free if you have been diagnosed with gluten sensitivity or celiac disease,” says Booking. “It is estimated that only about 1 in 100 Americans have celiac disease and 1 in 7 may have gluten sensitivity.”
Booking notes that many gluten-free foods are now marketed to the general public as health foods — even though some processed gluten-free products are made with significant amounts of added sugar, saturated fat and preservatives. “Since I do not have gluten issues, I do not eat gluten-free foods. The majority of Americans do not have these problems,” she says. “Don’t be fooled into thinking that gluten-free is healthier if you don’t have gluten problems.”
MORE: All Hype? Gluten-Free Diets May Not Help Many



‘High-Fiber’ and ‘Whole-Grain’ Cereal

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | +
Adam Gault / Getty Images
Adam Gault / Getty Images
Nutritionists are constantly encouraging us to eat more high-fiber foods and whole grains, which help lower the risk of heart disease and even some cancers. But according to Oz Garcia, celebrity nutritionist for stars like Hilary Swank, if you’re getting your fiber and grains from breakfast cereal, that’s probably not the healthiest way to go. Most commercial “healthy” cereals are packed with additives, he says. ”Unless you are purchasing cereal from a health food store, many brands that are marketed as healthy are usually full of sugar and processed ingredients,” says Garcia.
So when you’re choosing cereal, bread or any other whole-grain product, Garcia recommends reading labels with a critical eye. “Many whole wheat breads are not entirely whole grain. They are often processed with artificial ingredients and can even be caramelized for coloring,” he says.

cáramelìze[cár・a・mel・ìze]

[動](他)(自)〈砂糖を〉カラメルにする, 〈砂糖が〉カラメルになる;…にカラメルをかける
 
 
 

Processed Soy Foods

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | +
Russell Sadur / Getty Images
Russell Sadur / Getty Images
Whole, organic soy has a host of health advantages, but many nutritionists won’t touch processed products promoting “soy” ingredients — like Luna Bars and soy protein powders. That’s because processed soy, also known as soy protein isolate, has none of the carbs, fat or fiber that makes soy so healthy.
“I won’t eat soy protein isolate, or for that matter any soy unless it’s in its organic whole food form,” says Ashley Koff, a registered dietician and co-author of Mom Energy: A Simple Plan To Live Fully Charged. ”Isolating the protein at minimum loses the benefits of the rest of the soy, like its fiber and omega-3s, and at worst creates a product that may be implicated in hormone imbalance.”

‘Light’ Yogurt

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | +
Michael Rosenfeld / Getty Images
Michael Rosenfeld / Getty Images
This one is easy to get wrong, says Kim Snyder, nutritionist for celebrities like Drew Barrymore and Channing Tatum and author of The Beauty Detox Solution. After all, yogurt is always made of wholesome dairy and fresh fruit right? Wrong. “Yogurt can contain tons of sugar. Read the label and you’ll see yogurt often contains high-fructose corn syrup, artificial flavorings and artificial colors. One small container of fat-free yogurt can have upwards of 28 to 31 grams of sugar,” says Snyder.
New York City dietician Gans also avoids “light” yogurts. So when she still wants the dairy, but not the added sugar, “I much prefer to go with a low-fat Greek yogurt for a little extra calories and whole lot more protein. In some comparisons, an additional 8 g [of protein] per serving,” she says. “The creamy taste of Greek is more satisfying to me than the artificially sweetened.”
Low-fat dairy can be a healthy addition to your diet, by increasing your calcium and protein intake, which can help you feel fuller longer. But Snyder argues that there are lots of other sources of dietary calcium besides yogurt and milk that can be even better for you.

Nothing! Everything’s Fine in Moderation

By Alexandra Sifferlin | @acsifferlin | April 19, 2012 | +
Caspar Benson / Getty Images
Caspar Benson / Getty Images
Health gurus may gasp in horror, but Alan Aragon, a southern California-based nutritionist who works with professional athletes, welcomes pretty much anything into his diet. “There are no foods I can think of that I would completely avoid,” he says. “I like to say, ‘avoid food avoidance.’ This helps reinforce the principle that everything — and I mean everything — is fine in moderation.”
French fries? Cheese curds? Taco Bell’s Dorito-shell tacos? It’s all acceptable. “Junk food can be eaten as often as you want — even daily — as long as it only comprises a minor proportion of your overall calories for the day. This allows people to not feel boxed into a diet that has no leeway for letting your hair down,” says Aragon. “I’ve always said that life is far too long to spend on a strict diet.”


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