posted 11 years ago
Yes, but lettuce is "potentially carcinogenic". The slightly bitter flavour of the leaves are it's defence against being eaten (by slugs, grazing animals, lettuce loving humans). Hell, almonds are radioactive when put under a geiger counter.
What matters is if you are comfortable with the increased risk that eating that particular plant poses. I've seen no concrete evidence that suggests that the increased risk due to eating comfrey is significant (and lots that suggest it has useful medicinal properties in wound healing for example) provided it is only consumed in moderation.
I believe that some of the fear associated with comfrey is based on early medical trial which involved feeding animals diets of essentially pure comfrey and seeing what happened. This really doesn't reflect the reality of human consumption patterns.
(Obligatory CYA statement - do your own research, eat at your own risk etc...)
Moderator, Treatment Free Beekeepers group on Facebook.
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