I first want to say that I am not a medical doctor so always seek the advice of your GP or MD first. They are your primary care provider. I am just providing advice that in theory and my clinical practice have worked well. These are just my opinions and nothing more. Do not take this as medical advice. I have referenced articles and sources that are helpful for you. I get this question at least once a day so here you go.
Summary :
Remove all sugars, alcohol, processed foods, processed meat, etc.
Eat plenty of cruciferous vegetables like broccoli, cauliflower, cabbage, kale, etc.
Eat healthy fats like avocadoes, almond butter, olive oil, coconut oil, fatty fish, etc.
Juice raw vegetables
Reduce inflammation with omega 3 foods.
Remove all toxins.
Load up on antioxidants like glutathione, cysteine, etc.
Improve gut health with probiotics, prebiotics, phytonutrients, resveratrol, curcumin, tumeric, etc.
Frankincense essential oil is great
“I’d be cranking out my ketones. I’d probably be minimizing my carbs more than I am now. I would be talking with cancer specialists about what’s most likely to work. I’d also be doing aggressive antifungal therapy because there’s great evidence for that. Hyperbaric and things like that.”
“In more recent years researchers figured out that cancer cells not only feed off glucose and fructose, they also use fructose to divide and multiply. It’s one of the reasons that a ketogenic diet can be effective against cancer and we’ve learned now that tumor cells can’t use ketones because they just can’t use oxygen that way which is very interesting.”
Articles you should read:
http://articles.mercola.com/sites/articles/archive/2016/06/11/nutrition-influences-cancer.aspx
https://blog.bulletproof.com/patricia-daly-339/
https://draxe.com/cancer-natural-remedies/