Another potential factor is loneliness; is the institution of marriage linked to better health, or is it simply a question of living with another person? Although studies vary, the answer seems to be a little of both. People living with unmarried partners tend to fare better than those living alone, but men living with their wives have the best health of all.
Numerous studies conducted over the past 150 years suggest that marriage is good for health. More recently, scientists have begun to understand why married men enjoy better health than their single, divorced, and widowed peers. But before we turn to the why, let's look at how marriage affects specific diseases, including America's leading killers, cardiovascular disease and cancer.