Thanks for the feedback! It seemed to make sense to put everything together in one place, as a lot of the questions I answer crop up time and again 
I've just posted a new post on runner's tummy if you'd like to take a look!
Trixee - my route to qualification isn't one taken by many people. I first qualified as a dietitian. It's a protected title (unlike 'nutritionist' which is, as yet, not fully regulated), and the course is designed to enable graduates to work within the medical profession, so there's quite a degree of clinical application involved - lots of anatomy, physiology, medicine, etc. From there, I chose to specialise in sports nutrition by doing this course. It's geared towards people working in sport/nutrition, and I can highly recommend it. It's very much based on science and current evidence, so you can be sure the knowledge and skills you develop are of the highest standard.
There are other options, often delivered by companies that train people in the fitness industry. These are of varying quality, so choose carefully if this is the route you go down. The main thing is to ensure that the qualification is of a high standard and delivered by people who know what they're talking about! Having an interest/passion in the topic is important - you'll be more likely to keep yourself up to date in the research/evidence, which is key to being able to advise well!
I hope that helps! Let me know if you want any more information
