This study states that A healthy couple relationship is a predictor of good health (1). Data from American national surveys suggest that marital happiness contributes far more to global happiness than any other variable, including satisfaction with work and friendships (2). Higher-quality marital relationships are related to better health, including lower risks of mortality and cardiovascular disease. Couples who show hostile behaviour during marital conflict have elevated blood pressure and heart rate, higher levels of circulating catecholamines (norepinephrine and epinephrine) and cortisol, greater cytotoxic activity of natural killer cells (which play a key role in fighting viruses) and higher levels of circulating markers of inflammation compared to less hostile couples (3). Chronic and persistent inflammation has been implicated as a central mechanism explaining how psychosocial factors can contribute to chronic disease, including atherosclerosis and cancer.High-quality marriages may protect against cardiovascular disease for women (4) and lower the risk of infectious disease in pregnancy.

 

Reference link-https://academic.oup.com/fampra/article/38/2/115/5910790