Nutritionist or Personal Trainer?

[Qwert]

I am bodybuilder and I also do some personal training. As a bodybuilder I know lot about nutrition and nutrition is part of the training program I do with my clients. I have been thinking of getting a diploma in personal training so I can expand my business and get more clients but I have been told that I would make more money If I become a nutritionist. I like the idea to become a nutritionist as I already know lot about nutrition. I just have no idea how to become a nutritionist. Do I need some sort of certificate or is there a training course I can take or do I have to go to college.
And also how much I would be earning as a nutritionist. As personal trainer I can easily make 40 - 50 pounds an hour working with a client so can I really make more money as a nutritionist?

Thanks,

[liy0ngp0]

I think it would be best to choose a combination of the two, from nutrition to take things related to food and how you organize the masses and training, so that you can be good personal coach.