I use nettles too, they are growing in my garden next to other healthy herbs. I like the spinach-version more than the tea. I sometimes mix the nettles into ordinary spinach if I don't have enough of them.

My grandfather always said that it's "healthy" to get stung by nettles and it can help if you have stiff fingers or other joints. Maybe he just wanted to calm me down when I was crying because of the stinging as a kid, though