Dietary Nickel Is a Plant Trait, Not a Contamination Signal — page updateshttps://heavymetalcertified.com/articles/dietary-nickel-plant-staple-accumulationPublished revisions of this Heavy Metal Certified page.Dietary Nickel Is a Plant Trait, Not a Contamination Signalhttps://heavymetalcertified.com/articles/dietary-nickel-plant-staple-accumulationhttps://heavymetalcertified.com/articles/dietary-nickel-plant-staple-accumulation#revision-e7e3ebdb04eab890Mon, 21 Sep 2026 04:04:58 GMTNickel concentrates in cocoa, soy, oats, legumes and nuts as an intrinsic plant trait, not contamination, so a nickel result signals botany, not pollution.