题型:阅读理解 题类:常考题 难易度:普通
山东省泰安市2019-2020学年高二下学期英语期末考试试卷
How many afternoons have you slowly moved over to the office coffee machine and wondered: Is this really my fourth cup of the day? Or wait, is it my fifth? We've all been there, but a new study shows refilling your cup too often could be hurting your health.
The study, published in The American Journal of Clinical Nutrition suggests that drinking six or more cups of coffee per day may increase your risk of heart disease by up to 22%. Researchers from the University of South Australia also found a specific gene, called CYP1A2, which enables people to consume caffeine faster than those without it.
Overall, the researchers found that people who drank six or more cups of coffee a day were 22% more likely to develop cardiovascular (心血管的) disease, compared to those who drank one to two cups daily. The study authors believe that coffee (in large quantities) and heart problems may be linked because excess caffeine consumption can cause high blood pressure, a risk factor for cardiovascular disease.
Most people would agree that if you drink a lot of coffee, you might feel nervous and irritable (易怒的) .That's because caffeine helps your body work faster and harder, but it is also likely to suggest that you may have reached your limit for the time being. That doesn't mean that any and all coffee is bad for your heart, however. In fact, the researchers also found that participants who didn't drink coffee at all — and those who drank decaf — also had higher rates of heart disease (11% and 7% higher, respectively) than those who drank one to two cups per day. Previous research has found coffee is rich in antioxidants (抗氧化物质) and may reduce the risk of heart disease, stroke, and diabetes.
试题篮