Research topics are generated from problems in your field of study; (unknown, unclear and unsolved issues that are of great relevance) ; and not a research topic coming out of the blue.
Often people ask for Research Topics to investigate but then this question seems too blunt.
On the other hand, if we can brainstorm on problems facing the Food Science and Human Nutrition Field, we can generate research topics to solve these problems.
I’ll start it off:
The number of Cancer Patients in my country, Uganda is increasing gradually, what foods(functional) can help solve this dilemma; What products can I develop from these foods?