美国科学60秒 SSS 2013-03-13
时间：2018-12-24 作者：英语课 分类：Scientific American(三)月
英语课
This is Scientific American 60 second Science, I’m Christopher Intagliata. Got a minute?
Winter is high time for heart attacks. And while snow shoveling can pose a danger to your heart, the winter heart attack trend holds true in places that never see snow.
So researchers in sunny Brazil investigated another cardio culprit: cholesterol 1. They tracked cholesterol levels in a quarter million people living outside Sao Paulo—mostly middle-aged 2 men and women. And they found that levels of LDL, or bad cholesterol, shot up during the South American winter. The change pushed 18,000 people with borderline cholesterol levels over the threshold. The finding was presented at a recent meeting of the American College of Cardiology.
Why the wintertime spike 3? People tend to exercise less in winter, and to eat more fatty foods. We also get less vitamin D from sunlight—and studies suggest vitamin D may improve the ratio of good to bad cholesterol.
The biggest concern, the researchers say, is that one annual cholesterol check could over or underestimate your actual levels—and have an outsized influence on whether or not your doctor prescribes meds. The study doctors offer their own wintertime prescription 4: exercise, eat healthy and get more sun. Might keep you young at heart
Thanks for the minute for Scientific American 60 second science, I’m Christopher Intagliata.
1 cholesterol
n.（U）胆固醇
- There is cholesterol in the cell of body.人体细胞里有胆固醇。
- They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。
2 middle-aged
adj.中年的
- I noticed two middle-aged passengers.我注意到两个中年乘客。
- The new skin balm was welcome by middle-aged women.这种新护肤香膏受到了中年妇女的欢迎。
3 spike
n.长钉，钉鞋；v.以大钉钉牢，使...失效
- The spike pierced the receipts and held them in order.那个钉子穿过那些收据并使之按顺序排列。
- They'll do anything to spike the guns of the opposition.他们会使出各种手段来挫败对手。
4 prescription
n.处方，开药；指示，规定
- The physician made a prescription against sea- sickness for him.医生给他开了个治晕船的药方。
- The drug is available on prescription only.这种药只能凭处方购买。