Marriage may be more powerful than medication in fighting cancer.

A new study, published in the Journal of Clinical Oncology, found married people were 20% less likely to die from all types of cancer than people who were single, divorced, widowed or had never been married.

And, researchers say, with certain types of cancer, the survival benefits of marriage were higher than chemotherapy.

Some scientists say social support is the driving force, because spouses, family members and friends push people to keep their appointments and take their medication.