Heavy metal toxicity symptoms include abdominal pain, nausea, vomiting, and diarrhea; heart abnormalities; kidney damage; liver damage; lung irritation; brain dysfunction; changes in behavior; miscarriage or premature labor in pregnant women. For more information, go to the Genetic and Rare Diseases Information Center found u003ca href=u0022https://rarediseases.info.nih.gov/diseases/6577/heavy-metal-poisoningu0022 target=u0022_blanku0022 rel=u0022noreferrer noopener nofollowu0022u003ehereu003c/au003eu003csupu003e[3]u003c/supu003e.