This research examined how Orange Birch Bolete mushrooms accumulate mercury from soil in Poland. The study found these mushrooms can concentrate significant amounts of mercury from the environment, though levels were generally safe in unpolluted areas. This has important implications for mushroom foragers and consumers. Impacts on everyday life: – People who frequently collect and eat wild mushrooms should be aware of potential mercury exposure – Mushroom consumption from certain areas may need to be limited to stay within safe mercury intake levels – Environmental pollution can affect the safety of wild-foraged foods – Wild mushrooms can serve as indicators of environmental mercury contamination – Local knowledge of contamination levels can help guide safe foraging practices