
“Research now is increasingly focusing on the idea of anti-inflammatory food, meaning trying to genuinely limit ultra-processed foods (UPFs),” says Hope Barkoukis, PhD, RDN, the chair of the department of nutrition at Case Western Reserve University. There's no one standard definition of UPFs, but basically, instead of reaching for chips, candy, sodas, and similar refined fast foods, try more color in your diet from whole fruits and veggies, nuts of all types, lean proteins, and healthy fats such as olive oil and avocado oil. These foods help reduce inflammation in the gut, and may help reduce symptoms of colon cancer or its treatments.
Black Beans

Tierney says black beans are also packed with anthocyanins — the same antioxidants that give blueberries their deep color — adding an extra anti-inflammatory boost. Start with ¼ to ½ cup per day and gradually increase to ½ to 1 cup several times per week.
“I recommend [canned beans that are] pressure-cooked and BPA-free for easier digestion and safety,” she says. Remember to rinse canned beans thoroughly to reduce sodium and gas.
Salmon and Other Fatty Fish

Broccoli

Broccoli and other cruciferous vegetables (like cauliflower, kale, and Brussels sprouts) contain sulforaphane and indoles, compounds shown to detoxify carcinogens and suppress tumor growth, says Tierney.
Tierney suggests you aim for 4 to 6 servings per week and recommends prewashed, ready-to-cook broccoli florets for patients managing fatigue.
Ground Flaxseed

Tierney suggests taking 1 to 2 tablespoons daily mixed into oatmeal, smoothies, or soups.
Whole-Wheat Bread

If you are a bread lover, Dr. Barkoukis recommends whole-wheat bread. Whole-wheat flours are more nutritious than refined wheat flours, which lose a lot of nutrients during the milling process, she says.
Oats

Tierney suggests consuming ½ to 1 cup of oats daily, cooked as oatmeal, overnight oats, or blended into smoothies. She recommends buying oats that are non-GMO and minimally processed.
Blueberries

Tierney says you can consume ½ to 1 cup of blueberries daily, fresh or frozen. Add to smoothies, sprinkle on oats, or enjoy plain.
The Takeaway
- Adequate nutrition along with conventional cancer treatments can promote wholesome healing, help manage symptoms, and lower the risk of further colorectal issues. If you have colon cancer, consider incorporating high-fiber, nutrient-dense, anti-inflammatory foods into your diet.
- Opt for foods like oatmeal, which is rich in beta-glucan to support gut health; ground flaxseed, which is rich in omega-3 fatty acids with antioxidant effects; and black beans, which promote the production of short-chain fatty acids (SCFAs) that lower inflammation and nourish colon cells.
- Consult with a registered dietitian to explore options that are best for you. Note that your diet should complement any prescribed treatments, not replace them.

