So you know how when you go to the doctor, they help you stay healthy by checking things like your ears, eyes, and heart? Well, there's a special kind of doctor called an osteopathic doctor (DO) who focuses on preventing you from getting sick in the first place!
Now, the American Osteopathic Board of Preventive Medicine is a group of people that makes sure that these osteopathic doctors are trained properly and doing a good job of keeping people healthy. They test the doctors to make sure they know all the right things about things like vaccines, exercise, and healthy eating.
Think of it like a big test that all the doctors have to pass to make sure they're doing the best job they can to prevent people from getting sick. Just like how you have to study hard to do well on a test at school, these doctors have to study hard to do well on their tests from the American Osteopathic Board of Preventive Medicine.