The research suggests that while mental health does influence relationships ... when accounting for age, gender, relationship length, and other risk factors, according to the research.

Moorman, C., R. Deshpande, and G. Zaltman. "Factors Affecting Trust in Market Research Relationships." Journal of Marketing 57, no. 1 (January 1993): 81–101.

Among the many factors that have been shown to influence the development of an addiction are feelings about oneself, emotional state, quality of family relationships, social ties, community ...

Unfortunately, there is a causal relationship between oxygen administration ... temperature and light are external environmental factors that may influence gene expression in certain organisms.

Among the many factors that influence modern dating, such as political views, food preferences, and parenting outlook, one’s fondness (or lack thereof) for pets can be a deal-maker or breaker.