A dietician must have at least four years of an accredited university degree, especially around nutritional sciences. Dieticians look at food as a whole substance and study individual macro and micronutrients to prescribe healthy diet plans for each individual. A dietician's recommendations are based on recent research rather than the latest trends in eating patterns and dieting. On the other hand, a personal trainer has a certificate for creating and delivering safe and efficient exercise plans. Likewise, a naturopath is an individual who deals with a form of alternative medicine that uses various pseudoscientific methods that are natural, non-invasive, and promotes self-healing.