While there’s no definitive answer to whether or not any food could directly prevent or treat cancer, there are some things we know for sure.
Cancer cells thrive on sugar, and high insulin levels can also increase inflammatory responses in the body, which are a factor in the onset of cancer. Processed meat that contains nitrates can cause inflammation as well.
The idea behind an anti-cancer diet is to strengthen the immune system and address chronic inflammatory symptoms. According to Goodman and the American Institute for Cancer Research, here are some beneficial foods to embrace:
Spinach, kale, arugula, romaine, collard greens, Swiss chard—they all have antioxidant and anti-inflammatory properties. According to the AICR, carotenoids found in these veggies can inhibit the growth of certain breast and skin cancer cells.
Broccoli, Brussels sprouts, cauliflower, cabbage, and turnips are high in B vitamins and magnesium, as well as polyphenols, which can slow the growth of cancer cells. And since excess body fat can increase the risk of several types of cancer, the dietary fiber in these non-starchy vegetables can help—particularly with cancer in the mouth, pharynx and larynx, esophagus, and stomach.
“In India, where turmeric is widely used in the diet, the prevalence of four common U.S. cancers—colon, breast, prostate and lung—is 10 times lower,” says Goodman. The active substance in turmeric is curcumin, which can decrease inflammation and help the body detect and destroy mutated cells.
According to Goodman, whole ginger extract can inhibit growth of certain cancer cells by interrupting their cell-cycle progression, impairing cancer reproduction.
“This powerful medicinal mushroom has been researched for its ability to prevent cancer cell growth, stop tumor and cancer from metastasizing, [and] build immune strength and immune response against advanced stage cancers,” says Goodman.
Probiotics like sauerkraut, kefir, kombucha, and tempeh welcome beneficial microflora into the gut and regulate its pH balance, as well as maintain health of the digestive tract. Goodman adds, “the natural lactic acid and fermentative enzymes, which are produced during the fermentation process, have a beneficial effect on the metabolism and a curative effect on diseases like cancer.”
Under this umbrella of foods are garlic, onions, scallions, leeks, and chives, and studies show that the higher the intake, the greater the benefit. According to the AICR, garlic in particular has shown to slow or stop the growth of tumors in the prostate, bladder, colon, and stomach tissue, as well as protect against skin and lung cancer. In a laboratory study backed the the AICR, a compound in broccoli called diallyl disulfide was able to kill leukemia cells.
The high concentration of the omega-3 fat, alpha-linolenic acid, eases inflammation. Flaxseeds are also a potent source of magnesium, manganese, thiamin, and dietary fiber.
A polyphenol called resveratrol, abundant in the skin of grapes, has potent antioxidant and anti-inflammatory powers. AICR lab studies found that resveratrol could inhibit cancer and tumor growth in lymph nodes, the liver, stomach, and breasts, and it’s also been able to kill tumors from leukemia and colon cancer.
It sounds counterintuitive—after all, high estrogen, which is found in soy, is linked to breast cancer risk. But human studies backed by the AICR show that soy actually doesn’t increase the odds of developing this disease. The dietary fiber can in fact contribute to cancer prevention. To avoid GMO soy, go organic every time.
A healthy diet will go a long way, but cancer is no joke. As Kraber says, “Although alternative treatments and protocols do exist, radiation and chemotherapy are the most successful cancer treatments that medicine currently has to offer.”
So consider these nutritious foods as a way to boost the cancer treatment that’s right for you, but obviously consult a doctor when it comes to making a life-changing choices about how best to fight the disease.