proper nutrition is something most people are totally clueless about...
I adhere to an omnivore diet...a little of everything. meat, dairy, raw veggies, fruits, etc etc. try to eat organic, grass-fed, cage-free, etc. the only 'sugar' I buy is real maple syrup and local honey.
several years ago, I had some blood chemistry issues that were possibly gluten-related, so I went GF. it was a PITA for a couple of months, but once I learned the work-arounds to avoid gluten, it wasn't too bad. now I actually favor most GF products over the grain-based ones. except beer...but, I've found good whiskey is an excellent replacement.
avoid processed foods, that crap is junk and expensive.