[nearbuy]

Unfortunately it's an 8000 year experiment with no control group that can only detect large or acute effects. We don't know if regular exposure to potatoes slightly decreases IQ or increases risk of cancer or any other effects. (And, in fact, potatoes grilled over a fire are suspected to be carcinogenic.)

With leaded gas, the problem was also these small, long term effects that had never been established despite lead being used for thousands of years.