Can watercolor paint be poisoned when eaten?

It is understood that watercolor paints, oil pastels, crayons and other cultural and educational supplies. The raw materials and packaging materials used in products generally contain a certain amount of soluble antimony, arsenic, barium, lead, mercury, selenium and other elements. If the human body ingests these heavy metal elements beyond a certain limit, it will have a strong harmful effect on the human body and cause heavy metal poisoning.