A dietitian is a health professional that focuses on the science of food and nutrition. In many countries, they have a specialized degree and are board-certified. They provide general health advice but also focus on working with people with special dietary needs, for example for conditions such as PCOS.
Sources:
- NHS UK: How can I find a registered dietitian or nutritionist? https://www.nhs.uk/common-health-questions/food-and-diet/how-can-i-find-a-registered-dietitian-or-nutritionist/ (accessed 1. August 2020)
- Healthline: What’s the Difference Between a Dietitian and a Nutritionist? https://www.healthline.com/nutrition/dietitian-vs-nutritionist#1 (accessed 1. August 2020)