4. Reading check
A. Are these statements true or false? Write T (true) or F (false).
1.____ Canto and Owen both eat what they want.
2.____ A low-calorie diet causes age-related diseases.
3.____ People who eat less may have longer lives.
B. Circle the letter of the best answer.
1. Owen and Canto___ the same age.
a. are b. look c. are almost
2. Canto ___ common health problems of old age.
a. has many b. has some c. does not have
3. Researchers think___ will live 30 percent longer on the low-calorie diet
a. Owen b. Canto c. people
4. In a research study, mice on a restricted diet lived____ longer than normal mice.
a. 20 percent b. 30 percent c. 40 percent
5. When does the body produce sirtuin?
a. all the time
b. when genes slow the body down
c. when the body does not have a lot of food
6. What was the difference between the two groups of people in the research study?
a. One group consumed only 500 calories per day.
b. One group was healthier at the end of the study.
c. One group was three years older.
Will you live longer if you eat less? Scientists are studying the relationship between a low-calorie____ and____ in animals. In one experiment, one group of mice____ fewer____ than a second group. The first group lived____ longer than the second and appeared much healthier
Scientists now want to know if there are benefits to people as well as to_____. They are looking at the_____ from a research study involving humans. Members of the Calorie____ Society eat a limited amount of very nutritious food.
Some days they_____ instead of eating. Scientists think that a substance called sirtuin is more active when the body gets less food. Sirtuin may slow down the aging____. So does eating less help people live longer? Possibly. However, we still need to wait for scientists to do more research.