Treatment for obesity will be most successful if you create a long-term plan with your doctor. A reasonable goal might be to begin making lifestyle changes by increasing physical activity and eating healthy foods. Your initial goal should be to improve your health, not to achieve an ideal weight.
See ChooseMyPlate for the amount of food you should eat.
People often convince themselves that they don't overeat. Keeping a food journal can help you find out how many calories you consume in a day. Then you can set a goal with your doctor or dietitian according to your needs.
Limiting your calories to very low levels might seem like the way to quick weight loss. But it can have serious negative effects on your body and your ability to keep the weight off.
Limiting calories and portion size—not limiting the types of foods you eat—causes more weight loss over the long term. For example, cutting only carbohydrate or fat will not cause any more weight loss than a healthful eating plan.
Eat healthier foods—don't diet
Rather than focusing on a particular type of diet, try to eat healthier foods. Don't try to restrict the foods you love. Eat less of them. Eat smaller portions.
Take a look at the dietary guidelines for good health.
A dietitian can show you how to make healthy changes in your eating habits and help you recognize your hunger signals. For more information, see the Weight-Loss Strategies and Programs section of this topic.