When it comes to cancer prevention, three habits stand above the rest: nutrition, physical activity, and maintaining a healthy weight. These are the most powerful — and accessible — tools for long-term health.
A plant-forward diet rich in fruits, vegetables, whole grains, and fiber has been linked to a lower risk of several cancers, particularly colorectal cancer. At the same time, limiting processed meats and ultra-processed foods is equally important.
“Food is one of the most direct ways we influence cancer risk,” says Karina Lora, PhD, associate professor of exercise and nutrition sciences at the George Washington University. “The foods that we eat influence inflammatory markers in our body. Chronic inflammation can lead to a variety of diseases, including cancer, cardiovascular disorders, and autoimmune conditions.”
Movement is just as vital. Regular physical activity helps regulate hormones, reduce inflammation, and support immune function. The goal is simple: at least 150 minutes of moderate activity each week.
And you don’t need a gym membership to accomplish this. Walking, biking, yard work, or short activity “snacks” throughout the day can all count.
Weight also plays a central role. Excess body fat is associated with increased risk for multiple cancers, including colorectal, kidney, and pancreatic. Rather than focusing on restrictive dieting, experts recommend building sustainable habits.
“Healthy weight is a byproduct of balanced living,” Lora explains. “When you combine nutritious eating and regular movement, the body tends to find its natural balance.”
The key takeaway: these three pillars work together. Improving even one can make a difference, but combining them creates the greatest protective effect.
