How is gold harmful to humans?

Gold itself is generally non-toxic and biocompatible, which is why it is often used in medical applications and jewelry. However, exposure to certain gold compounds, especially in industrial settings, can be harmful and may cause allergic reactions or respiratory problems. Additionally, the mining and refining processes for gold can lead to environmental damage, which indirectly affects human health through pollution and habitat destruction. Prolonged exposure to some gold-containing compounds can also lead to toxicity and other health issues.