Tuesday, September 25, 2007

Foods That Curb Hunger


Foods That Curb Hunger

Rein in your appetite with these feel-full foods.

By Kathleen Zelman, MPH, RD/LD
WebMD Weight Loss Clinic - Feature

Reviewed By Louise Chang, MD

Anyone who has ever been on a diet is familiar with the gnawing feeling of hunger that occurs when you cut way back on calories. And after a few days of feeling deprived, most dieters throw in the towel. But what if you could cut calories, yet still eat plenty of food, and not be plagued with constant hunger? Experts say that if you choose foods that help curb hunger, as well as become more mindful of your eating behaviors, you can actually eat more and still lose weight.

American Dietetic Association spokesperson Dawn Jackson Blatner calls it the "dieters' dream come true" trilogy of fullness foods: "If you have at least one or more foods that are high in water or fiber and lean protein at all meals, you will feel full on fewer calories."

High-Water, High-Fiber Foods Help Curb Hunger

Foods high in water and fiber, like fruits and vegetables, are the so-called high-volume foods. They add bulk to your meals and help fill your stomach.

Researcher Barbara Rolls, PhD, and her colleagues at Pennsylvania State University have done extensive research on the "volumetric" theory of eating more low-calorie, high-volume foods.

"We have found in numerous studies that when you allow people to eat as much as they want of foods that are high in volume yet low in density (calories), they eat less at the meal or during the day," says Rolls.

Indeed, Consumer Reports magazine recently named Rolls' Volumetrics program as the best-researched diet plan.

There are basically two simple volumetric strategies, says Rolls: "Eat a salad or bowl of broth- based soup before the meal to reduce intake at the meal; or reduce calorie density by increasing water, air, or fiber and take out a little fat -- but not so much that the dish loses it taste."

How does it work? Foods containing water, air, or fiber have fewer calories than other foods and also cause the stomach to stretch and empty slowly. In addition, the simple act of seeing a large amount of food -- like a big salad -- can help you feel more satisfied.

The best part is that choosing foods low in caloric density helps you shed pounds without feeling like you're on a restrictive diet.

Lean Protein Can Reduce Hunger

There is growing evidence of the power of lean protein, like lean meat, fish, poultry, soybeans, and eggs, to help with fullness and weight loss .

"You are most likely to feel fuller after eating protein than other nutrients, including fiber, and one of the theories behind why higher-protein diets work well with weight loss is because it helps you not feel hungry," says Purdue University nutrition professor Wayne Campbell, PhD.

Two recent studies from Purdue demonstrate the satisfying nature of lean protein. In one study, female participants who took in about 30% of their calories from lean protein felt more satisfied and maintained muscle mass better than another group that ate less protein.

"We found that an additional 20-30 grams of protein or a 3-4 ounce portion of lean protein was enough to influence appetite," says Campbell. "We have also shown that when diets are inadequate in the amount of protein and don't meet national recommendations, desire to eat increases."

His suggestion: To keep calories in check, have higher-protein foods in place of other foods. For example, choose a glass of skim or low-fat milk instead of drinking a sweetened beverage, and you'll take in 8 extra grams of protein

You can add lean protein at any meal, but research has shown that adding it to your breakfast may be especially helpful

In a study presented at the 2007 Experimental Biology meeting, researchers at Pennington Biomedical Research Center compared weight loss in dieters who ate either two eggs or a bagel for breakfast. The two breakfast meals were identical in calories and volume, but the egg breakfast was much higher in protein.

"Compared to the bagel eaters, overweight women who ate two eggs for breakfast five times a week for eight weeks, as part of a low-fat, reduced-calorie diet, lost 65% more weight, reduced waist circumference by 83%, reported higher energy levels, and had no significant difference in their ... blood cholesterol or triglyceride levels," reports researcher Nikhil V. Dhurandhar, PhD.

"When people eat eggs, rich in protein, at breakfast, they felt more satisfied and consumed fewer calories throughout the day, compared to those who ate a primarily carbohydrate meal like a bagel."

Solid Foods Are More Filling

Eating solid foods rather than drinking liquids can also help you feel fuller, experts say.

"Beverages high in water do not last as long in the stomach as solid foods," says Campbell. "Hunger will not be reduced as much with a liquid as with a solid, so if you are choosing between a meal replacement drink or a meal replacement bar, go for the bar for greater satiety."

Eat Mindfully to Feel Fuller

When your stomach is stretched from food, it sends a signal to the brain that you have had enough to eat. But that signal doesn't always get through -- especially when the dessert cart rolls around.

To help stay in tune with your body's signals, experts say, it helps to slow down and eliminate distractions while you're eating.

"Eat slowly and mindfully, do not engage in multitasking -- reading emails, watching television – concentrate on your meal," suggests Blatner.

She recommends taking half an hour to finish your meal.

"To prolong the meal, you can chew slowly, put your fork down between bites, use chopsticks or your non-dominant hand, but my favorite is to simply take smaller forkfuls," she says.
 

Add These Foods to Your Diet to Curb Hunger

So how do you put this hunger-fighting power to work? In a nutshell, experts say, adding more of these foods to your diet can help curb hunger and help you feel fuller on fewer calories:

  • Soups, stews, cooked whole grains, and beans
  • Fruits and vegetables
  • Lean meats, fish, poultry, eggs
  • Whole grains, like popcorn

And here are some easy strategies for working those hunger-fighting foods in your diet:

  • Add shredded or chopped vegetables to pasta and egg dishes, main-dish salads, and other mixed dishes, and use them to top pizzas.
  • Eat whole fruits instead of fruit juices or dried fruits.
  • Use a blender to whip air into fruit drinks, smoothies, or sauces.
  • Choose whole-grain puffed cereals, popcorn, breads, cereals, and pasta.
  • Enjoy vegetable salads or broth-based soups before meals.
  • Top entrée salads with lean meats, poultry, eggs, tofu, beans, nuts, or fish.
  • Add fruit to salads or enjoy as dessert.
  • Add beans to stews, soups, egg dishes, and casseroles.
  • Have lean protein or low-fat dairy at all meals and snacks.

Published September 18, 2007.

For more info Click  on   DIET


 

Monday, September 24, 2007

The Best Multivitamin for you

The best multivitamin for you -- and 11 to steer clear of

 
By Valerie Kramer Davis
 
 

You've been told for years that popping a multivitamin every day might help you live longer. But the daily multi habit has been getting a bit of bad press lately.

art.multivitamins.jpg

Vitamins can help provide key nutrients for individuals whose diets are low on fruits and veggies.

First, ConsumerLab.com, a watchdog of the supplement industry, found that more than half of the 21 multis it tested had too much (or too little) of certain vitamins -- or had been contaminated with dangerous substances such as lead. Then a controversial paper from researchers in Denmark and other European countries, published in the Journal of the American Medical Association, made the claim that taking vitamins may actually shorten your life.

What's the real story? Health talked to leading nutrition experts at Harvard and Tufts universities to find out and to get some answers on this and other confusing info about vitamins.

Are multivitamins safe?

Vitamins have been recommended for years because they help you get key nutrients if your diet's low on fruits and veggies -- and may even help prevent cancer and heart disease. And it's unlikely that one critical paper (speculating that vitamin supplements might upset your body's natural healing process and boost your risk of death) will change that. Health.com: Your vitamin cheat sheet

Longtime vitamin experts at Tufts University and the Linus Pauling Institute at Oregon State University continue to say multis aren't dangerous and the paper's findings are wrong. The paper analyzed previous studies, including many with people who were sick before taking vitamins, so there's a good chance vitamins weren't responsible for shortening their lives. Experts say the paper also ignored two major studies that found vitamins reduced the risk of death.

At the same time, the study from ConsumerLab.com shows that you can't assume just any vitamin is safe. Because there are no uniform manufacturing rules for supplements, a multi may not contain what the bottle claims, could be contaminated with something from the manufacturing plant, or might have tainted ingredients. Health.com: 20 antioxidant powerhouses

Your best bet: Avoid the vitamins singled out by ConsumerLab.com, and stick with mainstream names such as Centrum Silver and One-A-Day Women's, which were found to be free of impurities and accurately labeled. Also, check vitamin bottles for the United States Pharmacopoeia (USP), NSF International (NSF), or ConsumerLab.com (CL) seals. The USP and NSF are nonprofit groups that verify whether companies offer contamination-free products and use good manufacturing practices. Not every brand has the seals -- some don't want to submit to testing--but those that do (Kirkland and Nature Made carry the USP seal, for instance) are reliable.

How much should I spend to get the biggest benefits?

Price isn't a sign of quality. In fact, some of the priciest vitamins -- like The Greatest Vitamin in the World and Eniva Vibe, which cost more than $39.95 per bottle -- failed the Consumer Lab.com tests. A mainstream brand such as One-A-Day Women's is $8.99 for a bottle of 100 tablets at drugstore.com , about 9 cents per day.

How do I find the right multi for me?

In your childbearing years, make sure your multi has 400 micrograms (mcg) of folic acid, which helps make and maintain new cells. And pregnant women should take a vitamin with 600 mcg of folic acid daily; this nutrient also reduces the incidence of neural tube birth defects such as spina bifida.

A premenopausal woman should look for a multivitamin with iron to replace the iron lost during menstruation. Menopausal women should go without the iron. "Too much iron may raise the risk of heart disease," says Meir Stampfer, Ph.D., professor of nutrition and epidemiology at Harvard School of Public Health. Health.com: A new way to "pop" your vitamins

If you're taking a prescription, check with your doctor about risky interactions. (Vitamin E, for instance, may be a problem if you're taking a blood thinner.) If you're a cancer patient, you should ask your doctor about risks before taking vitamins. "Cancer cells need vitamins to grow, too," Stampfer says. Plus, some vitamins can interfere with chemotherapy.

What's the best way to avoid that queasy feeling after taking a multi?

"Consider switching brands," Stampfer suggests. Trial and error is the best way to determine which brands won't break down poorly in your stomach and lead to irritation. Also, take your multi with food because your body needs some fat (or lipids) to absorb some of the individual vitamins. The delivery method (pill, liquid, gummy bear) makes no difference. But vitamins in liquid form may degrade more quickly on the shelf.

How much of each vitamin should my multi have?

The amount per serving numbers on the label should match the government's Dietary Reference Intakes (DRI). It's OK if they're higher as long as they don't exceed the tolerable upper limit (UL). (To find the DRIs and ULs, go to Health.com/links.) While most vitamins are listed in milligrams (mg) or micrograms (mcg), the label may use IUs (international units) for vitamins A, D, and E. The DRIs are 2,300 IUs for vitamin A, 200 for D, and 22 for E. What about the label's % Daily Value column? Look at it with a skeptical eye: Those numbers haven't been updated since 1968.