I have read several books about cancer prevention diets. VERY interesting. Some people have actually been cured through these diets, although certainly not all, and there are no formal studies, and trials NEVER include special diets. It is imperative to do a good diet to improve the whole body system and not just focus on organs with cancer. So here's what I've learned and what I'm doing:
Poisons are everywhere in the air, soil and water. Grow your own food and/or buy totally organic.
Juicing is important. I make my own raw fruit and veg juices and/or smoothies every day.
Plant based foods (all organic) with a little bit of free range, grass fed lean beef, bison or pasture raised chicken. I'm in a semi-rural area where I can buy direct from farms.
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Eat as much raw food as possible (it's difficult to eat 6 carrots and 2 beets in a sitting, but easy to drink that much in a glass of delicious juice)
Low or NO dairy, salt, wheat, sugar, coffee, animal fats, alcohol.
Drink filtered, de-chlorinated water, green tea, herb tea (organically grown tea).
This may sound awful but trust me, you'll get used to it. I am thriving on this diet---everyone says I look great----and when I pass all the tempting cakes and cookies in the supermarket, I don't look twice. It's just poison to me.
I also exercise every day, preferably outdoors. Seven wks. out of major surgery including resection of 2 organs and getting rid of a 3rd + 16 nodes, I can hike a few miles in the snow and cold up and down hills, do moderate yoga and run around all day doing normal activities without taking any pain pills.
I attribute my very fast surgery recovery to the diet and outdoor exercise + yoga.