It’s old Southern wisdom: If momma ain’t happy, no one’s gonna be happy.” But there could be more than happiness at stake. For middle-aged and older adults, having a happy spouse could mean better health for you, according to researchers from Michigan State University in East Lansing. Previous research has suggested that happy people also tend to be healthy people. But what effect does one person’s happiness have on the most intimate of interpersonal relationships: marriage? If a wife is happy, could that make her husband healthier — even if he’s a grumpy old man? The short answer is yes. A study found those who said they had a happy spouse were far more likely to report better health for themselves over time — over and above their personal level of happiness. Simply having a happy partner may enhance health as much as striving to be happy oneself.