As a gym rat and bicyclist i was having health issues. No drugs or alcohol. Lots of supplements.

I went oxalate free on a zero carb diet for several years and it fixed my auto immune disorder. I lost 30 pounds of muscle in the process because of a loss in appetite. I slowly readded foods into my diet. Turned out that I couldn't handle salicylates in large amounts. It's in most plants as well. 3% of the population shares my intolerance. We can't eat spices or herbs.

All humans have individual variances in our ability to process plant toxins. There's a reason why some people are more prone to kidney stones than others. It doesn't mean someone is unhealthy.