The trouble is there are dangerous or even lethal amounts of practically every vegetable, but it’s nearly impossible to find the numbers.

The only advice is to have great variety, and don’t eat stuff with an ingredients list, but that’s also hard to do

I went a tad extreme since I’m allergic to several of the staple plant foods (notably all the grasses, wheat in my food makes me sick, bamboo in my clothes makes me itch) so I quit all plants (and I haven’t died of scurvy even once!). I still wonder what is the LD50 for cabbage.