My husband and I both took the Pinnertest and it revealed several foods that we are intolerant to. Both of us actually knew (although didn't want to believe) that we were bothered by certain foods.
For me it was coffee, chickpeas, eggplant, and cabbage. I had known that more than one cup of coffee gave me some rage issues, but I had thought it was the caffeine. Nope, I don't get that reaction from any other caffeinated food or beverage, so I cut it out and have felt much better. I used to be angry the first two hours of the day.
My husband never liked egg yolks, and dairy gave him issues, but he had continued to eat both. Turns out he reacts to cows milk, egg yolks, lentils, and pork, which also gave him a reaction immediately after eating it, but he had ignored it. He has stopped all and feels much better.
It is empowering to know exactly what your dietary issues are, and I would highly recommend the Pinnertest!
Bottom Line: Yes, I would recommend this to a friend