chopped down odin s sacred tree. that end the practice. you guys love trees. look at the evergreen. it is ever green. it never dies. it is eternal life jesus gives you. it is an arrow. it points to heaven and points to god. reporter: also connection to martin luther the father of the protestant reformation. germans brought the trees to america. that is why we celebrate christmas trees. this is one of the back stories about christmas. read more about it online at foxnews.com. jon: a little history lesson. lauren, thank you. reporter: sure. jenna: it is a big medical story that caught our attention especially when you can blame something else for you gaining weight. potentially antibiotics. the study is looking at right now. some researchers are saying ant bottom ticks could be jeopardizing our health by making us gain weight. dr. garner joining us from new york methodist hospital. ant bottom i can it is making us antibiotics