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Knowledge of low-fat diet

April 25th, 2010 admin 3 comments

Overview
Although there are many weight-loss diets, statistics show that most people who lose weight on a diet regain that weight, and sometimes they gain more. The best ways to stay healthy are eating well and being physically active.

Excess calories from meals, snacks, and drinks can lead to weight gain. Low-fat eating helps you lower the amount of calories you get from fats. Eating less fat is also part of a heart-healthy diet. It can help lower the risk of high cholesterol and heart disease.

You do need some fat in your diet for energy and to help absorb vitamins.

Low-fat programs such as the Life Choice Diet (Ornish) and Pritikin suggest only 10% of your daily calories come from fat. These very low-fat diets do not follow the MyPyramid guidelines for healthy eating.

The Life Choice Diet
Author Dean Ornish, MD, suggests people make lifetime changes that include very low-fat eating habits, exercise, and stress management.

On the menu


Unprocessed vegetables
Unprocessed fruits

Egg whites
Lean meats
Omega-3 fatty acids (fat like that found in fish) in very small amounts
Off the menu

White pasta
White bread
Egg yolks
Caffeine
Processed foods
Most fats
For more information, see the topic Weight Management.
Basic concept

Ornish promotes low-fat vegetarian eating to reverse or prevent heart disease. Exercising and managing stress are equally important in this lifestyle program.

How it works

There are two versions of the Life Choice Diet. The “reversal diet” is for people who have diagnosed heart disease or high cholesterol levels. Because you are trying to reverse damage to your body, you must follow strict guidelines. The “prevention diet” is less structured. You still eat a diet very low in fat, but you have more flexibility in what you can eat.

Guidelines for both versions of Ornish’s diet include eating a vegetarian diet high in complex carbohydrates (fruits, vegetables, and in their natural forms). About 10% of your calories come from fat in the reversal diet. You may have more fat in the prevention diet as long as your weight or your cholesterol levels don’t begin to rise. Oils are limited to 3 teaspoons a day. Mostly, you eat foods that have less than 3 grams of fat in a serving, and you stay away from saturated fat and sugar.

On the menu

High-fiber grains, legumes (beans and peas)
Fruits
Vegetables

Egg whites
Small amounts of alcohol
Off the menu

Meat and all animal products
Caffeine
Nuts, seeds, olives
Chocolate, coconut

Oils, except for small amounts of canola oil for cooking
Pritikin
Nathan Pritikin, PhD, developed the Pritikin diet in the 1970s. It’s similar to the Ornish program, with no more than 10% of calories coming from fat. Pritikin does allow some lean meat and seafood that is rich in omega-3 fatty acids.

Basic concept

Pritikin encourages eating natural, nutrient-rich, high-fiber foods. Daily exercise is part of the program.

How it works

The theory is that when you limit fat to 10% of your daily calories, there’s no need to count calories. Eat often to keep from feeling hungry—six or seven meals a day. You can eat as much as you want of , vegetables, and fruit. Exercise every day: for example, take a 45-minute walk.