Bhavana advise patients and their families on nutritional principles, dietary plans and diet modifications, and food selection and preparation and counsel individuals and groups on basic rules of good nutrition, healthy eating habits, and nutrition monitoring to improve their quality of life. Dietitians and nutritionists counsel patients on nutrition issues. Dietitians and nutritionists are experts in the use of food and nutrition to promote health and manage disease. They advise people on what to eat in order to lead a healthy lifestyle or achieve a specific health-related goal.