What can I do about my teeth?

I'm 13 years old and am already starting to get dental problems. Dental problems are hereditary so obviously there isn't much I can do. I brush my teeth 2 times daily. I have never had braces, and have fairly straight teeth. My teeth are always slightly yellow, my gums are starting to recede, and sometimes my teeth get loose, and I have all my adult teeth. My mom has all false teeth because her diseases got so bad and she is only 50, and my dads teeth are very yellow. They both have always had good brushing habits even as kids. I don't want that happening to me either. Is there anything I can do? Thanks.