How Marriage Might Improve Health
Relationships—whether romantic, platonic, or familial—powerfully contribute to well-being. Married people tend to live longer and spend more years healthy on average, partly because healthier individuals are more likely to marry and stay married, and partnership itself provides social support, reduces isolation, promotes healthier habits, and offers someone who says, “You should probably get that checked out.”
Heart Disease
People who are married have a lower incidence of cardiovascular disease, including heart attacks, stroke, and death from heart disease, compared with those who are unmarried, divorced, or widowed. Social support is a key factor—it buffers health-related risks and outcomes. Dr. Shannon Markus recalls a patient who had a major heart attack outside the ER after complaining of chest pain for hours; his wife had been urging him to go to the hospital, and her persistence likely saved his life.
Mental Health
A fulfilling marriage positively impacts mental health through companionship, emotional and financial support, stability, and shared positive experiences. The same ingredients that make relationships successful—respect, honesty, communication, emotional regulation—apply to marriages. Men often benefit more health-wise from marriage, possibly due to reduced risky behaviors and wives taking on more health-monitoring roles in heterosexual relationships.
Cancer
A 2026 study analyzing data from 103.7 million people over eight years found that being married is linked to a lower cancer risk. Marriage acts as an informal “health manager,” moderating behaviors like smoking and alcohol use, encouraging healthy habits, and prompting preventive screenings. Cancers such as cervical, anal, and oral show the largest differences by marital status, likely due to better screening adherence and fewer sexual partners, reducing HPV exposure.
Not Every Marriage Is Good for Your Health
While a supportive partnership can be a biological safety net, a high-conflict one may have the opposite effect. Marital quality is key: high emotional support is associated with better cardiovascular risk markers, while marital stress increases the risk of high blood pressure, heart attacks, and cardiovascular mortality, especially in women. Unhealthy dynamics also take a mental toll, linked to poorer sleep, anxiety, and depression. Relationships with domestic abuse carry even higher risks. Being unpartnered can have health benefits too—single people may have more time for exercise, and strong social networks outside of romance are protective. As Dr. Markus concludes, happiness and supportive relationships, regardless of marital status, are paramount for health and well-being.