After doing a little bit of research on radicchio I've discovered that it is supposedly known for it's toxicity to internal parasites. Obviously it's not good to feed any one particular food item to a tortoise in excess, I'm just wondering if the volatile oils contained in the leaves pose any danger to my tortoise if fed in moderation? Also, does anybody have any anecdotal or factual evidence that radicchio does in fact reduce worm burdens? I was just curious so if anybody can enlighten me a little bit on the subject I'd greatly appreciate it! Thanks!