Over half of Canadian youth and young adults who have consumed energy drinks have experienced negative health effects as a result, according to a study from the University of Waterloo.

In a nationwide survey of Canadian youth, over half of those who had ever consumed an energy drink had reported experiencing a negative health event. Currently, Canadian legislation is meant to prohibit energy drinks from being marketed to children and energy drinks are not recommended to be used by people participating in sporting activities.

"Most risk assessments to date have used coffee as a reference for estimating the health effects of energy drinks. However, it is clear that these products cause a greater health risk," said David Hammond, a Professor in the School of Public Health at the University of Waterloo. "The health effects from energy drinks could be due to the different ingredients than coffee, or the ways in which they consumed, including with alcohol or during physical activity.   Regardless, the findings suggest a need to increase monitoring of health effects from these products."

In conducting the study, the researchers surveyed 2,055 young Canadians aged 12 to 24. Of those who had reported consuming energy drinks at some point in their lives, 55.4 percent reported experiencing a negative health event. Of those reporting negative health events, 24.7 percent reported experiencing a fast heartbeat, 24.1 percent reported difficulty sleeping and 18.3 percent reported experiencing headaches.

"The number of health effects observed in our study suggests that more should be done to restrict consumption among children and youth," said Hammond. "At the moment, there are no restrictions on children purchasing energy drinks, and they are marketed at the point-of-sale in grocery stores, as well as advertising that targets children."

【小题1】Who are forbidden to take energy drinks in Canada?

A．Children.	B．Athletes.
C．Old people.	D．Healthy people.

【小题2】What makes energy drinks have negative effects?

A．The different ingredients in them.	B．The coffee contained in them.
C．The quantity consumed at a time.	D．The place where they are consumed.

【小题3】What writing skill is used in paragraph 4?

A．Comparing results.	B．Listing figures.
C．Giving examples.	D．Raising questions.

【小题4】What can we infer from Hammond's words in the last paragraph?

A．It is illegal for children to buy energy drinks.

B．Energy drinks are sold only in grocery stores.

C．Some child actors advertise energy drinks.

D．It's a long way to ban children from energy drinks.