Married people are 20% less likely to die from cancer, a recent study found. Married patients were less likely to be diagnosed with an advanced stage of the disease and more likely to undergo the best treatment plan for their disease state. Moreover, even at the same cancer stage and undergoing the same treatment, married patients were significantly less likely to die. For several cancers, including prostate and colorectal cancer, the effect of marriage on survival was greater than that of chemotherapy. Several factors may explain these findings. Spouses may remind each other to get regular medical check-ups and encourage each other to stick to their cancer treatments. Social support may also alleviate depression, lower stress, and strengthen the immune system.