Christmas and in-laws, gut implications A study could confirm the beliefs about your second half’s family… Just like every December, the end-of-year holidays are a terrain of important decisions concerning our physical and mental integrity. Many have to divide the days between family, friends, and in-laws. What effect could all this have on our microbiome? The question may seem strange, even senseless, but scientists have looked into it with a serious and small study. The question we might ask is