Mushrooms, including chaga, contain high levels of oxalates and may not be beneficial for human biology, potentially acting as survival foods.

“takeaway here is just that mushrooms are not benign either and i have pretty significant concerns about the amount of oxalates in many mushrooms including chaga four to five tablespoons of mushroom sounds like a lot but there's a lot of companies out there now that are increasing our consumption of these quote muslim mushrooms i i'm not convinced that they're necessarily beneficial or that they add anything to human biology i they still want to defend themselves they are still rooted in the ground we should be very careful with these”