But there is growing evidence that a good marriage may also keep you healthier by directly benefiting your immune system, which spearheads the body’s defenses against illness. Researchers have known for about two decades that divorce can depress the immune system’s function. Theoretically, this decline in the system’s ability to fight foreign invaders could leave you open to more infectious diseases and cancers. Now we have found that the opposite may also be true. Not only do happily married people avoid this drop in immune function, but their immune systems may even be getting an extra
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