7.Rhubarb Leaves
Eating the stalk is OK, but leave out the leaf. Rhubarb leaves contain oxalic acid, which binds to calcium and makes it harder for your body to absorb it. In turn, your bones can’t grow the way they should, and you’re at risk for kidney stones, blood clotting problems, vomiting, diarrhea, and coma.
8.Bitter Almonds
Both types of almonds — bitter and sweet — have amygdalin, a chemical compound that can turn into cyanide, but bitter almonds have the highest levels by far. Sweet almonds are safe to snack on, but eating untreated bitter almonds can cause cramps, nausea, and diarrhea.
