When it comes to nutrition, I'd also recommend foregoing science when studies aren't available (gasp) and, as InfinityX0 suggested, try different things and do what works best for you.
"Let's try it and see what happens" really is the core of science, all the complicated shit is just figuring out the most useful "it" to try and being extra certain that the "what happens" really was due to the "it" that you tried.
Foregoing science would mean deciding whether it works based on what your astrologer or the most recent "expert" says, rather than whether it can actually be observed (apparently) working.
http://www.paleonu.com/get-started
When it comes to nutrition, I'd also recommend foregoing science when studies aren't available (gasp) and, as InfinityX0 suggested, try different things and do what works best for you.