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Dietetics is the Science and art of feeding individuals based on the principles of nutrition. It can also be said to be the Science and art of human nutritional care. Diet therapy and its application in patient related settings is a major focus of dietetics. Thus, the field of dietetics can be related to: (a) nutrition care and intervention focused on the individual and (b) nutrition care and intervention focused on the group.
They can work with government hospitals, governments health department, schools, colleges, factories and office cafeterias for planning nutritional regiment.They can also work for sports hostels and athletes camps. Health and recreation clubs, canteen and nursing care facilities also require the services of nutritionists and dietitians. Employment opportunities are also open to them in catering department of star hotels and restaurants.Moreover they could find openings in the mass media where top priority is given to disseminating vital information on healthy living.
At entry level salary varies from 10,000 to 25,000 rupees /month as per the abilities and experience.
For top position salary varies from rupees 25,000 to 90,000 per month depending on qualifications, position held, experience and location.

Hi John,
NDA Exam comprises of two rounds i.e. Written Exam and Interview. A candidate needs to be very well prepared before appearing in the exam. Follow the tips given below to inch closer towards your dream.
Get The Basics Right
Before starting NDA Exam Preparation, you must go through the syllabus thoroughly and be clear about what you need to study. This prevents you from studying the irrelevant topics. Then start from the beginning by clearing the basic concepts and then move further so that you understand everything in a better way.
Improve Your General Knowledge Be fully aware of the Current Affairs and keep an eye on the day to day events that takes place nearby you. This will always prove to be beneficial and will give you an edge over others in the exam.
Improve Your Englis: An efficiently English speaking candidate will immediately catch the attention of the selectors in the interview round. Also, this will be of great help in the written exams as there is a section of English in that.
Refer Previous Question Papers Go for the question papers of last 2-3 exams and practice them regularly. This will give you an idea about the exam and will also help you in time management. This is an excellent way of boosting your NDA Preparation.
Some of the popular books for NDA are:
Basic NCERTs
Pathfinder for NDA & NA Entrance Examination
Mathematics for NDA and NA: National Defence Academy and Naval Academy (English): R S Aggarwal
Manorama Yearbook 2017 (English/Hindi)