You can get lead test strips that will let you check this. Most of the current production stuff is nowhere near as good as the vintage stuff.... and with most of the new ones coming from China, it wouldn't surprise me to find lead in them, too.Start with a fresh new piece of cast iron cookware. You never know if one of the last owners used his to melt wheel weights. Cast iron is porous and the lead will leach out into what you are cooking. But, then, its your health, not mine.
A longer acting version of the Darwin Award.