Dietershave long sworn that grapefruit helps them lose weight. The Grapefruit Di-组卷网

阅读理解-阅读单选 0.65 引用1 组卷53

Dieters have long sworn that grapefruit helps them lose weight. The Grapefruit Diet, also called the Hollywood Diet, dates back to the 1930s and has a host of celebrity fans including singer Kylie Minogue. It involves having grapefruit or grapefruit juice with every meal while cutting back on calories.

Now, scientists are beginning to believe them.

A study has found that drinking grapefruit juice when eating fatty food lowers the amount of weight put on by up to a fifth.

The research also suggested that grapefruit could be as good as prescription drugs at keeping blood sugar levels under control—a key part of managing diabetes.

The experiments were conducted on mice—but researchers say the results are true for humans. Professor Joseph Napoli, of the University of California, Berkeley, said, “We see all sorts of tricks about nutrition. But these results, based on controlled experiments, make it necessary to study the potential health-promoting properties of grapefruit juice further.”

The researchers found that when the mice were fed fatty food for three months, those given grapefruit juice to drink gained up to 18 percent less weight than those given water.

They also had lower blood sugar and insulin levels—despite eating the same number of calories and doing the same amount of exercise as the mice who drank water. In fact, grapefruit juice was as good at controlling insulin as the widely used diabetes drugs, the journal PLOS ONE reports.

However, the fruit juice only had an effect on weight when the animals ate fatty food. The researchers said they did not know how grapefruit stops the pounds from piling on.

Spokesman Mariette Abrahams, a dietician, said until then it is too early for people to try grapefruit diets. “Grapefruit should be part of a healthy balanced diet, but it shouldn’t be the focus of the diet.” she said.

【小题1】What can be known about the Hollywood Diet?

A．It’s the origin of the Grapefruit Diet.

B．It was more popular in the 1930s than any time.

C．It may appeal to fat people.

D．Scientists may think it is nonsense.

【小题2】What did the experiments on mice show?

A．They should have been conducted on humans.

B．The results apply to humans too.

C．Grapefruit could cure diabetes.

D．Mice prefer grapefruit juice to water.

【小题3】In which case will grapefruit juice make a difference to weight loss?

A．The mice with high blood sugar.