‘By the time doctors finally discovered what had poisoned Alexander Litvinenko, he had only three hours to live.
As he lay unconscious, his wife Marina holding his hand and his ten-year-old son, Anatoli, stroking his forehead, a laboratory test on a urine sample identified the lethal element polonium-210 as the silent killer ravaging his body. [..]
The revelations about polonium-210 provoked a new rush of conspiracy theories. Security experts said this was no crude grudge killing but was the work of assassins with likely access to a nuclear installation, not just to a radioactive isotope that could be acquired from medical waste.’
I used to work a bit with polonium-210. Never did me any harm. But I s’pose I was playing with only nanograms at a time and definitely not eating it. 🙂