Dietitian (noun)

A person who is an expert in dietetics; a person who advises people on what to eat in order to lead a healthy lifestyle.

Origin:

Late 19th century: from diet + -itian.

Examples:

1. The dietitian recommended a balanced diet that included plenty of fruits and vegetables.
2. The dietitian was consulted by the athlete to help him optimize his nutrition for peak performance.
3. The dietitian designed a customized meal plan for the diabetic patient, taking into account her specific needs and preferences.
4. The dietitian was responsible for overseeing the food service and ensuring that the meals served were nutritious and appetizing.
5. The dietitian gave a lecture on the importance of a healthy diet for overall well-being and disease prevention.