An eating disorder research website or a Mental health research website such as National Institute Of Mental Health. It can help you keep up to date because websites are most times updated with new information and easy to access now a days.
If you assume responsibility for your personal health behaviors then you are more likely to maintain good behaviors. If you don't then you might tend to follow lackluster health behaviors. Think about it like going to class. If you hold yourself accountable to do the work, then you will most likely succeed. However, if you don't hold yourself accountable you most likely won't care what happens.