Like many people in this world I have looked at options to get some better training on the nutritional angle. It is clear it is very important.
What I do not like about Precision Nutrition is that it is highly geared toward profit, including having ‘recommended’ supplements. I also do not love the focus on the look of the body, as opposed to the health (I am not speaking of their stated philosophy, which I have not read at length, but of their web site)
The integrative nutrition cert. seems very thorough, though there is that slick marketing again, that is just something that I personally do not find appealing, but that is personal. I do not need a red water bottle with their logo. It is also interesting that a number of schools offer credit for completing this program. Were I doing a program, I might choose this one.
I very much trust ACE, and I think it would be fine to have that.
For my own edification I recently looked at some of the university degree RD programs, to compare what you must study to be a nutritionist, as opposed to one of these programs. I think before any trainer thinks of getting into nutritional advice it is useful to look at these. It is very impressive: chemistry, biochemistry, microbiology“. etc. My question to myself would be if I needed nutritional guidance would I not want to hire a nutritionist? Although, if I were already working with a nutritionist, or not, I might find it helpful if I were also working with a trainer, if they were knowledgeable enough to give me basic guidance. I just think it is tremendously difficult to find a model in which one can make the cost of such a program pay enough to merit it, as opposed to getting something else.
I can see that both your experience and you credentialing are excellent. You have a strong enough background already that taking one of the nutrition like lifestyle programs might be very effective for you. (But I think you should always hold it in mind how your knowledge of training compares to someone who did a quick online ‘certification’ or one that required a weekend’s effort. )
Really interesting question, and one I think many of us are pondering.