Tumeric is meant to be good, my OH was diagnosed last November and he is trying it but we will probably never know if it works or not as this cancer is so variable from person to person. I did check with the Oncologist first to make sure it would not affect any treatment he was given, she said it was OK for him.
I would always make sure that any 'natural' or alternative therapies are OK with the consultant first, especially herbal medicine as some can have a negative impact on other treatment.
I would definitely not take anything like cannabis oil in place of Hormone Treatment or Chemo if it is offered, despite what you read on the internet about it being a miracle cure, there is no medical evidence to back these claims.
I am all for alternative medicine, but not at the cost of conventional medicine, especially with something as serious as this.