As most people here might already know – in developing countries like India “where” you learned matters more than “what you learned”. For example, what a CS student learns from an old IIT is miles different from what he/she learns from a “normal” engineering college. Anyway from your question I can assume that the institute is “normal”. Now has he/she learned anything useful in that degree? – very unlikely from a “normal” college. So, in terms of job prospects the degree is not that useful (exam grades and marks won’t matter).
Now suppose if he/she has learned practical things in the “nutrition” degree I believe there are plenty of opening in top private hospitals – they are becoming popular in Tier 1 and Tier 2 cities and towns in India and should be a decent job. Nutritionists are also having job prospects in Western countries. For example both psychologists and any health care professionals are in the shortage occupation category in UK and so can get a work visa provided some company offers a job. The minimum salary needed for a work visa in UK is 30,000 pounds (around 30 lakhs INR per annum) and so all these jobs must be paying at least that much (divide by 2.5 to compare with Indian salary).
If “what I studied” doesn’t matter – there are always opportunities in govt jobs – clerical jobs need only +2 level and still can get 50,000+ monthly salary within 2-3 years of experience. SSC, IBPS, Civil Service all are possible for those who are determined. Other options can include teaching in schools.
PS: If you join any coaching institute for SSC, IBPS etc. I’m not responsible for the result.