As you can see at the beginning of my video Fermented or Unfermented Soy Foods for Prostate Cancer Prevention?, There is A huge variation in prostate cancer rates around the world, with one of the highest in the US and the lowest in Asia – although that may change. The world’s largest increase in prostate cancer rates in the past few decades Has in South Korea, for example: a 13-fold increase in deaths from prostate cancer across the country. The researchers suggested that the increase in animal feed may have played a role, as it was the largest change in their diet over that period, with an increase of nearly 850 percent.
This is consistent with what we do knows generally about food and the prevention and treatment of prostate cancer. Tomatoes, cruciferous vegetables like broccoli, and soy foods seem to reduce the risk. There are no distinct benefits from fish, but there is an increased risk of meat and dairy products as you can see at 0:52 in my article Video. This may be because a diet based on whole plant foods “can be effective to reduce Inflammation in the body. “
There is also a genetic factor. If you have a first-degree relative with prostate cancer you may be 3 times more likely, but non-genetic factors can increase your risk up to 300 times. How do we know the low rates in Asia are not genetic? Because when Asians move to the US, their rates “rise” and, in the second generation, the incidence rate [is] is already approaching that of the average American. “This may be due to more Burger Kings and Dairy Queens, but it could also be due to less protective foods like soy being eaten.
A systematic review of all previous studies on soy and prostate cancer populations Approved that soy foods are associated with lower risk, but that is a relatively broad category. There are all kinds of soy foods. There are fermented soy foods like miso and tempeh and unfermented ones like tofu and soy milk. Which are more protective? Researcher sifted through the studies, and it turns out that only the unfermented soy seemed to help. Consumption of tofu and soy milk was linked to a risk reduction of around 30 percent, while there appeared to be no protection for fermented soy foods.
What about other healthy plant foods like broccoli and turmeric? See what you can do Best Supplements For Prostate Cancer.
Dean Ornish and colleagues had amazing results and apparently reversed the progression of prostate cancer with a plant-based diet and lifestyle program. Do you think it could be the soy? It wasn’t just a vegan diet, but a vegan diet supplemented with a daily serving of tofu and a soy protein isolate powder. Find out in The role of soy foods in the prevention and treatment of prostate cancer.
More on cancer number one in men:
What about soy and breast cancer? I’m glad you asked!
Who Shouldn’t Eat Soy? Check out the video to find out!
Michael Greger, MD
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