Tag: Lichen safety

Historically, various cultures have consumed certain types of lichen, particularly during times of famine or as a specialty food. This practice is fraught with caution, however, as the question of 'can humans consume lichen' is not a simple yes or no answer due to toxic species and the need for proper preparation.

Multiple reported cases of severe liver damage and failure have been linked to the oral consumption of supplements containing usnic acid, a compound found in usnea. While a powerful antimicrobial agent, usnea carries significant risks when ingested and is not considered a safe dietary item.