I ate jars of Skippy peanut butter and I was thought to have asthma. This back in the early-mid 1960’s. Drank milk and had it with my cereal.
I had a thyroid problem only recently diagnose (2009). The fix for me was lots of vitamin D and I also take iron and magnesium. I take no thyroid meds. I now do not have the breathing problems I had as a kid.
It could be a combination of the foods we eat that triggers allergic reactions
And the condition of the soil.