>That's interesting. I was just reading about how high dose IV vitamin c can induce cell death in a wide variety of cancers, but somehow, despite this being known for decades, nobody has done rigorous research on it

Linus Pauling (of the Nobel Laureate fame) working along with some physicians did do 'rigorous' research on it, and I think had published a book on it. You should be able to check the Linus Pauling Institute and find literature on it. I probably did it over a decade back. Predictably he was ridiculed (IMO wrongfully) for it by people who did a very shoddy job of looking into the nuances.

The last I checked in the US the Riordan clinic offers Vit C for Cancer. There are probably several other practitioners who will not publicize that they treat patients for cancer (and several other chronic conditions) for obvious reasons.