Now this is a good question that deserves a good answer. There is no one answer so let me give you mine.
Some people lose faith in natural therapies because there is no clear definition of what they are. I believe that is their strength. You are an individual, as different as one star is from another. You deserve an individual solution to an individual problem, not an off the shelf generic kill, slash and burn solution, but one that is grounded in science, logic and reason, and then matched to your individuality.
Some natural therapists tend to lean towards feelings and esoteric stuff, others are grounded in science. They all work with the body naturally, bringing it from a place of imbalance to a place of balance. Some may use supplements, others herbs, or manipulation, or energy points, or essences. All are aimed at activating healing in the body. You need to find a modality or combination of modalities that suits you.
Me, I like a foot in all camps. Take the best of everything to get the best of everything to tailor an individual response appropriate for your body.
May I suggest that we start with what causes cancer and then see where that takes us?