What will a nutrition major bring in the future?

I am a first year nutrition major at my 4 year school. I chose this major because I knew I wanted to do a health science but was not sure if nursing was exactly for me. I am not on the path taking all the right classes for my nutrition degree. What exactly does a nutritionist do for work? Where do they work? I have done plenty of research but have found many different answers from random sources. At this point I don’t know what it is called what I want to do so I will describe it. I have always wanted to “specialize” or focus in an area of helping/working with special needs adults. I really would do anything with them such as a role of a nutritionist. With diseases such as down syndrome or autism. I know I don’t want to be a teacher though. Does anyone know what I could do in order to reach my dream of working with those adults? Will nutrition be the right choice?? Any help/advice would be great!! Thank you SO much.