About 70,000,000 Americans are trying to lose weight. That is almost 1 out of every 3 people in the United States. Some people eat _______ food and they hardly(几乎不) have any fats or sweets. Others do running ,exercise with machines, take medicines, or even have operations(手术). ________ you can see losing weight is _______ work, and it will also cost a lot of money. But _______ do many people in the United States want to lose weight?

Many people in the United States are worried about their look of the body. For many people， looking nice also means to be__________ . Other people worry about their health as many doctors _________ overweight is not good.

Most people want to find an_________ way to take off  fat，and books of this kind are very popular. These books tell people how to lose weight. Each year a lot of new books like these are ________. Each one says it can easily help people take fat away.

Losing weight can be ________ . Some overweight people go to health centres， like La Costa in California. Men and women __________several hundred dollars a day at these health centres. People live there for one week or two，__________ exercise， eating different foods. Meals there may be just a little. All these work for losing weight. _________ 4 days on the programme， one woman called Mrs. Warren lost 5 pounds （2.27kg）. At $ 400 a day， she spent $ 320 to lose each pound. But she said she was still __________ to do so.

Health centres， books， medicines， operations， running and exercise machines all _______ a lot of money. So in the United States， losing weight may mean losing _______ too.