I did whole 30 also and found I couldn't have it again, but mainly it just showed me I always had a problem. My eczema cleared up and my constant sinus congestion. I had had it for so long I had never given it a second thought. After blood testing it showed I am almost off the charts allergic to dairy and casein.
Started Primal June 2012 at 148.5lbs, and 5' 1", reached goal weight in 5 months.
Lowest weight 93lbs - too thin. Now stable at 102lbs much better weight for me at my age.
Primal, minus eggs, dairy and a myriad of other allergens.