So delighted to have this board! 
I am 51, and have a lot of education
. I have a science-based BSc, MSc and PhD. After finishing my PhD I moved into scientific publishing, which has been a great fit. I do really (mostly) enjoy my job, have quite a senior role and am paid reasonably well for what I do.
However. I don't want to do this until I retire. I would love to do something completely different. So I have enrolled in a nutrition course - it's just the one course, so I could see if I liked it. I do! I'm struggling to find the time to study in between working full time and having a family (kids are in primary and secondary), but I'm enjoying the learning. It's an accredited program, and if I complete this course and one more next term (and pass!) I will be 'invited' to do the MSc next September. I was thinking that is what I would do, except that a) I would have to quit my job for an uncertain future; b) I really have no interest in doing the research aspect of the MSc - been there done that!
Then I realised I could do a PGDip or PGCert and avoid the research component (and higher cost) and keep working while I did the required courses. That appeals much more to me. But what I'm unsure about is whether I would be much less employable as a nutritionist with 'only' the PGCert or PGDip (I'm aware of the differences between a nutritionist and a dietician, but I just can't commit to full-time education right now, and there are no suitable programs anywhere near me).
Would I seem more credible as a self-employed nutritionist, for example, having my scientific background and training, even though they aren't in nutrition? Or would I end up with yet another qualification and no job prospects at all?
Thank you in advance for any advice!