For Survivors of Childhood Cancer, Walk

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Exercise could improve the life expectancy of adults who survive cancer as children, even if the activity begins years after treatments end, according to an inspiring new study.

But the study also finds that many survivors rarely, if ever, move much.

In one of the most stirring success stories of modern medicine, many childhood cancers are now treatable, including types that once would have been fatal.

But there can be costs associated with these advances. Some of the standard treatments for cancer, such as chemotherapy and radiation, are known to weaken the heart or increase the risks for subsequent tumors, including in children.

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