Experts are gathering in Auckland to share promising new discoveries around vitamin C and its potential impact as a treatment for cancer, infection and immunity.

Research Professor Margreet Vissers told Mike Hosking while things are looking promising, there are years of clinical trials ahead before a cure is found.

She says down the track vitamin C is likely to form a crucial part of the cure.

Vissers said in these early stages, it could help those suffering from a broad range of cancers including leukaemia, brain, pancreatic and breast.