单选题
Men who exercise often are less likely to die from cancer than those who 1 , new research published in the British Journal of Cancer revealed yesterday.
A team of scientists from the Karolinska Institute in Sweden looked 2 the effect of physical activity and cancer risk in 40, 708 men 3 between 45 and 79.
The seven-year study found that men 4 walked or cycled for at least 30 minutes a day had a 34 percent lower risk of 5 from cancer than the men who did less exercise or nothing at all. 6 the period studied, 3, 714 men developed cancer and 1, 153 died from the disease. The researchers suggest that half an hour"s walking 7 cycling a day increased survival among these men by 33 percent.
The researchers surveyed men from two counties in central Sweden about their lifestyle and the amount of 8 activity they were usually doing. They then scored these responses and compared the results 9 data on cancer diagnosis and death officially recorded in a central cancer registry over a seven-year period.
Lead author, Professor Alicja Wolk, said: "These results clearly show for the first time the effect that very simple and basic daily 10 such as walking or cycling has in reducing cancer death risk in middle-aged and elderly 11 ".
Dr Lesley Walker, director of cancer information at Cancer Research UK, said: "This study gives us a clear indication that men who exercise are less 12 to die from cancer, and that they are more likely to 13 the disease if they get it. It"s not entirely clear from this study what role exercise plays in preventing 14 in men, but we do know that a healthy lifestyle can prevent up to half of all cancers and 15 exercise forms a key part of this. "