Vitamin C! Expensive pee? Or cure for cancer?

I spoke to Professor Margreet Vissers from the University of Otago’s Centre for Free Radical Research, in New Zealand, about their research on Vitamin C's role in cancer management, on how optimal levels aid our immune systems, how it can affect tumour growth, how you cannot overdose on Vitamin C, and how the idea that Vitamin C is expensive pee is a result of bad science.