Graduates who wish to become registered dieticians must complete specific dietetics coursework. If students wish to work as nutritionists or dietitians, they must check with their state to determine licensing or certification prerequisites. According to the . Bureau of Labor Statistics ( ), many states have laws that govern dietitians and nutritionists, some of these states require licensing, while others require certification or registration. Additionally, those seeking careers as personal trainers and health fitness instructors can take a comprehensive exam administered by the American College of Sports Medicine to receive certification.