Can you get fat by hanging around obese people?
Can you catch obesity from having sex with a fat person? Sexually transmitted obesity? STO's
I'm sure by now you've seen the reports on obesity being contagious.
Don't get any ideas. Unless you have a specific medical problem, my guess is that you are in control of being obese or not. Don't let this "study" give you any excuses.
Get moving, talk to a trainer, join a gym...do whatever it takes to take control of your life.