奇速英语

10分钟高强度骑行即可抗癌？

Evidence suggests regular exercise can help tackle cancer, and a new study finds that cancer-fighting biological changes can be started in the body after just 10 minutes of intense cycling. This burst of activity is enough to release beneficial substances into the blood. These substances speed up genetic repair and dial down genes related to cancer growth. This results in a shift in blood chemistry, started by exercise, that potentially slows the growth and spread of cancer. This might be something we can use to create new treatments — in this case, for colon (结肠) cancer.

“What’s remarkable is that exercise doesn’t just benefit healthy tissues, it sends powerful signals through the blood that can directly influence thousands of genes in cancer cells,” says clinical exercise physiologist Sam Orange, from Newcastle University in the UK. “It’s an exciting insight because it opens the door to find ways that mimic or increase the biological effects of exercise, potentially improving cancer treatment and, crucially, patient outcomes.”

Thirty overweight or very overweight volunteers who were 50-78 years old were asked to join the study. After a quick warm-up, they completed an intense cycling exercise on a fixed bike lasting about 10 minutes. Using blood samples collected before and after the exercise, the researchers identified how the mixture of substances changed. These samples were then applied to lab-grown colon cancer cells, revealing some potential anti-cancer effects.

While exercise has previously been shown to be an effective way to slow colon cancer and help prevent it from coming back after surgery, this study provides a detailed look at the biological pathways involved, which in turn opens the door to exploring new treatments.

There are limitations here: The effects of the blood samples were tested only in lab-grown cancer cells, not people, and only the short-term effects of a single session of exercise were measured. However, there are enough encouraging signs here to suggest that short but very active sessions of exercise — or drugs that somehow cause the same effects in the body — could be a promising new way of slowing colon cancer.