The official cause of death of Marie Curie was "aplastic pernicious anemia" which we now call leukemia. She did suffer from radiation poisoning during her life, but radiation poisoning usually triggers one of 3 forms of cancer which result in death. Pierre Curie was also suffering from bone cancer, and would have died of it, had he not stepped in front of a car, which resulted in his death in 1906. In those times, nuclear radiation was treated as a novelty, and there were many radioactive products that could be legally purchased, including radioactive water, blankets, lotions, creams, ear plugs, soap, toothpaste, chocolate bars, suppositories, and contraceptives

In 1929 Eben Byers marketed a 'medicine' called Radithor, which was guaranteed to contain 2 µCi of radium, and he swore by its health giving properties - at least he did until he died of leukemia in 1932! With so many 'quack cures' around, regulations were gradually tightened up, but even in the 1960s, it was possible to buy 'health giving' products containing radioactivity in small doses.