I guess this research is wrong then? https://nutritionfacts.org/video/preserving-immune-function-in-athletes-with-nutritional-yeast/ https://nutritionfacts.org

I guess this research is wrong then? https://nutritionfacts.org/video/preserving-immune-function-in-athletes-with-nutritional-yeast/ https://nutritionfacts.org/video/preserving-immune-function-...