More relationship news: Your friends are making you fat (my friends will make you PHAT). I can't get away from that joke, it's too easy.

One study says your friends make you happy, healthy and care free. And the other says that girl is totally ruining your life.

Harvard physician Nicholas Christakis and University of California-San Diego political science professor James Fowler published a New England Journal of Medicine study in July that countered the argument. The study offered evidence that friends who become obese can influence close friends to follow in their overweight footsteps. Media outlets jumped on the study and went hard for the "friends will make you fat" headlines.

But that's not all!

A study published by the American Psychological Association this summer found that teen girls who are complainers can experience higher rates of anxiety and depression if they socialize with other girls who are complainers.

Which just means that teen girls should stay away from each other at all costs. They should just hang out with teen boys, hang out and watch a lot of... oh never mind. Teenagers should just be locked in a box somewhere. There, I've solved that problem.