@CNN: The explanation for the majority of the findings, particularly better fitness, is wealth, said the study author. Married people have generally accumulated more of it by later life than unmarried people. https://t.co/biw2kT1apb

@CNN: The explanation for the majority of the findings, particularly better fitness, is wealth, said the study author. Married people have generally accumulated more of it by later life than unmarried people. https://t.co/biw2kT1apb