The FDA and Dept of Agriculture allow know toxins to be present in our foods, cleaning and grooming products. They base this amount on what they consider an acceptable level. Every modern country sets their acceptable level at different levels. Our American chemical and agricultural lobbies are powerful and influence congress and other governing goverment agencies. We allow preservatives, metals. pesticides and other substances banned in many european countries. Also when they do eliminate one offending element they often replace it with an equally bad one which isn't as well known.
Fortunetly I was personally tested with the 5 Day Extended Patch Test to identify my allergens ( I have severe Allergic Contact Dermatitis, ACD). I know how to read product labels, yet with fresh foods it's a gamble even if it states it's organic. Over time exposure to offending elements can create allergies. I had no allergic reactions until the age of 50.