stylistic:style_transfer, structural:expansion, quality:correction
Marital quality

While simply being married is associated on average with better health, the health impacts of marriage are affected by marital quality. High marital quality is typically characterized as high self-reported satisfaction with the relationship, generally positive attitudes toward one's spouse, and low levels of hostile and negative behavior. Conversely, low marital quality is characterized as low self-reported satisfaction with the relationship, generally negative attitudes toward one's spouse, and high levels of hostile and negative behavior. A troubled marriage is a significant source of stress, and limits one's ability to seek support from other relationships. Unmarried people are, on average, happier than those unhappily married. A meta-analysis of 126 studies found that greater marital quality is related to better health, with effect sizes comparable to those of health behaviors such as diet and exercise. Explanations for the links between marital quality and health focus on social-cognitive and emotional processes, health behaviors, and a bidirectional association with mental illness.