Five Cancer-Fighting Food Groups

According to American Cancer Society, more than 2 million Americans are expected to be diagnosed with cancer in 2026. An estimated 44% of these cases are linked to modifiable risk factors such as:

• Excess body weight
• Alcohol consumption
• Poor nutrition
• Physical inactivity
• Smoking
• Secondhand smoke exposure
• Excess UV radiation exposure
• Viral, bacterial and parasitic infections

Although there are many listed risk factors, the good news is several are lifestyle related. That means small, consistent changes can add up over time and may help reduce your overall cancer risk. One of the most practical places to begin is with nutrition.

While diet cannot guarantee you will not develop cancer, research strongly supports the role of healthy eating patterns in lowering cancer risk. One such pattern is the “New American Plate,” introduced by American Institute for Cancer Research (AICR), based on decades of cancer prevention research. This plant-forward approach encourages making about two-thirds of your plate a variety of plant foods and one-third or less animal-based protein foods. This plant-to-animal ratio reflects dietary patterns that are consistently associated with a lower risk of cancer. It is also associated with a lower risk of diabetes and cardiovascular disease.

What makes this plant-forward approach so beneficial? Let’s take a closer look at five key plant-based food groups and simple ways they can support long-term health and help reduce cancer risk.

Much of the research points to a similar sentiment: a high intake of plants is one of the most powerful choices you can make to reduce cancer risk. This can be accomplished through more than one dietary pattern, and one of the most evidence-based options is the Mediterranean diet. Not only will this impact your cancer risk, but it will help support your longevity and overall well-being! Begin reducing your cancer risk and overall risk of disease by eating more of the foods listed below.

Fruits

AICR reports diets rich in fruits, when combined with non-starchy vegetables, are associated with a lower risk of certain cancers, including colorectal, mouth, pharynx, larynx, esophageal, lung and stomach cancers.

Why do fruits support this protective effect? It is hypothesized that a big part of the answer is their antioxidant content. Each fruit offers its own unique mix of antioxidants and these antioxidants help protect our cells from free radicals. Free radicals are produced as a byproduct of normal cellular metabolism and they can also form from environmental exposures such as tobacco smoke or UV radiation.

Free radicals are unstable molecules with an odd number of electrons. Because they are missing an electron, they are highly reactive and can damage DNA. Any time DNA is damaged, there is an increased risk of developing cancer. However, antioxidants help by donating an electron without becoming unstable themselves. This donation neutralizes the free radical, helping protect DNA from damage and potentially lowering cancer risk.

Note: You may hear the term “oxidative stress.” This is the state of the body when it has more free radicals than it can handle with its natural defenses (such as antioxidants), which can lead to damage in cells, including DNA.

To obtain a wide range of antioxidants, try including a variety of colors and types of fruit, such as:

• Berries
• Cherries
• Citrus
• Apples
• Grapes
• Watermelon
• Apricots
• Grapefruit
• Tomatoes
• Pomegranate
• Plums
• Peaches
• Papayas
• Avocados

Rather than supplementing with a single antioxidant, it is best to get your antioxidants through a variety of foods. Try incorporating fruit into your current meals, as a regular part of your snack routine or as a sweet way to finish your meals.

Vegetables

No single food can prevent cancer on its own, but vegetables are one of the most well-studied when it comes to their anti-cancer benefits. Variety is key as each vegetable has unique anti-inflammatory capabilities. Cruciferous vegetables, such as broccoli, cabbage, Brussels sprouts and cauliflower, are especially full of antioxidants. Other well-researched vegetables to reduce cancer risk include:

• Asparagus
• Carrots
• Garlic
• Kale
• Spinach
• Winter squash

Cooking methods matter, too. Steaming, sauteing, roasting and microwaving can help retain nutrients. If you grill vegetables, aim to avoid heavy charring. For an extra antioxidant boost, season vegetables with onions, garlic, herbs, spices, lemon, capers and other flavor-forward ingredients.

Beans, Peas, Lentils and Whole Grains

Beans, peas, lentils and whole grains are some of the best sources of dietary fiber. Fiber is a type of carbohydrate found in plant foods that your body cannot fully digest. It helps move food through your digestive system, supports regular bowel movements, keeps you fuller longer and can help support healthy blood sugar and cholesterol levels.

Higher fiber intake is also linked with a lower risk of colorectal cancer. AICR reports that for every 10-gram increase in dietary fiber, colorectal cancer risk is about 7% lower.

Fiber is found in all plant foods, but beans, lentils and whole grains are especially rich sources. For perspective, 1 cup of cooked beans, lentils or whole grains typically provides 7 to 14 grams of fiber. A helpful target for cancer prevention and overall health is about 30 grams of fiber per day, so one cup can provide close to half of your daily goal!

Note: Fruits and vegetables also contribute meaningful fiber and help you reach your daily total with more variety.

Healthy Fats: Nuts, Seeds and Olive Oil

When it comes to nuts and seeds, variety wins. Different types offer a variety of anti-inflammatory benefits, and they make an easy snack or meal add-on. Try incorporating walnuts, almonds, pistachios, hazelnuts and seeds such as flax, chia, hemp, sunflower and pumpkin.

If you do not enjoy nuts on their own, try adding them to Greek yogurt, cottage cheese, oatmeal, cereal, smoothies and salads. Nut butter is another option that works well for dipping fruit, spreading on toast or blending into smoothies.

A standard serving of nuts is about 1 ounce (roughly 1/4 cup), which provides around 200 calories. If weight loss is a goal, portion size matters and you can still enjoy nuts by measuring servings and using them strategically.

Olive oil is another healthy fat often highlighted in plant-forward eating patterns. It contains polyphenols, which can help protect against oxidative stress. Choose extra virgin olive oil when possible, buy it in an opaque container and store in a cool, dark place. For best flavor and quality, choose a bottle size you can use within two to three months of opening. Use olive oil on salads, vegetables, beans, whole grains or as a finishing drizzle for extra flavor.

Spices

Spices are a wonderful way to bring out the flavor in your food while packing an antioxidant punch. Spices are a simple way to add big flavor while also adding plant compounds that support health.

Turmeric has been studied for its role in inflammation because it contains curcumin. You can cook with turmeric regularly and pairing it with black pepper and a small amount of fat can help the body absorb curcumin more effectively. Other spices to keep in rotation include black pepper, chili powder, paprika, ginger, cinnamon, cumin and oregano.

Tip: The best “cancer-fighting” spice strategy is not one single spice. It is using a variety consistently, the same way you approach fruits and vegetables.

Navigating how to implement these changes in an individualized and realistic manner can feel like a large task. Schedule a nutrition consultation with a Cooper Clinic registered dietitian nutritionist to create sustainable health habits that work for you. Having support is one of the best ways to experience long-term success in your health journey! For more information, call 972.560.2655 or visit cooperclinicnutrition.com.

Article provided by Cooper Clinic Nutrition.