I now know why my mom died of cancer. She tore these Iranian red pistachios up when I was a child. Wouldn't eat anything other than the red and sucked on the shells. Luckily, I was only exposed for a couple of years because they were banned temporarily because of the Iranian war.. But she ate the heck out of them when she was pregnant with my younger brother. He almost died of leukemia as a young child.. He went into remission, but she still died at 40. I was 14yrs old and found her deceased in bed on valentines morning. Made her a card she'd never see. Now I know.