Americans may not know it, but there’s convincing evidence that regular exercise helps fight cancer, especially certain types.
Breast cancer is one example. According to the National Library of Medicine, “Physical activity has been shown to decrease the incidence of breast cancer. Colon cancer rates also fall with regular physical activity, according to a 2025 study published in the New England Journal of Medicine.
“From 2009 through 2024, a total of 889 patients underwent randomization to the exercise group (445 patients) or the health-education group (444 patients),” the study noted. “At a median follow-up of 7.9 years, disease-free survival was significantly longer in the exercise group than in the health-education group.”
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Gym memberships remain hard to get for cancer patients
Even as the data show exercise is a proven cancer reducer, patients — especially those with limited budgets — struggle to access the programs physicians recommend. Inefficient health insurance is the main barrier. Typical plans do not cover the fitness regimens needed to help push cancer into remission.
“This issue is personal,” Jennifer Grehan, a U.S.-based Pilates instructor and founder of The Core Collab, where she has coached post-cancer patients, told Moneywise. “My best friend was diagnosed with cancer in her 40s. She trained on the Pilates reformer all through her treatment.”
Grehan’s friend didn’t beat cancer, but she lived about ten years past her prognosis.
“They were good years,” Grehan noted. “I watched what supervised strength work gave her: the energy to get through treatment days and the strength to keep living her life.”
A basic gym membership is unlikely to solve the cancer-exercise conundrum, though.
“Someone in or after treatment can’t be put on a fixed program,” Grehan said. “Cancer-related fatigue changes week to week, sometimes hour to hour.”
That can mean peripheral neuropathy alters how a patient’s feet feel the floor. After breast surgery, a shoulder may go halfway up. Lymphedema risk changes how that arm can be loaded.
“My job is to read all of that every session and adjust,” Grehan noted. “A gym card can’t do that if insurers cover the building instead of the coaching; they’ll pay for the part that doesn’t work.”
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Health insurers are being ‘penny-wise and pound foolish’
If exercise were a prescription drug, experts say health insurers would already be paying for it. Given the evidence, why aren’t insurers treating supervised exercise as medically necessary?
“Exercise is such a powerful tool for improving health and reducing the risk of illness and disease,” Fitz Koehler, fitness expert, cancer survivor, and author of Your Healthy Cancer Comeback, told Moneywise. “It’s penny-wise and pound-foolish for health insurance companies not to invest in programs that help patients stay active and strong. Classes, trainers, memberships, and support programs can all be incredibly beneficial, particularly for people navigating cancer treatment and recovery.”
There is also a strong financial case for coverage.
“Spending $1,000 or less per year on a gym membership or fitness program seems like a smart investment when you consider the potential costs of medical procedures, medications, hospital stays, and long-term care,” Koehler said.
Keeping cancer patients active and strong throughout treatment can help improve quality of life and physical functioning, potentially reducing the need for extra medical care.
“From my own history, investing in exercise is far more sensible than waiting until patients experience complications that require expensive interventions,” Koehler said. “If customers invest proactively in their health, insurers should be encouraging that behavior. It’s a win-win.”
Insurers say they’ll cover fitness programs
Insurance companies say they’re open to covering cancer patients’ fitness programs, but the burden of proof is on them.
“Supervised programs may be considered by insurers if the programs can reduce the cost of care and improve the health of beneficiaries,” Nathan Weller, an insurance advisor at Insurpedia, told Moneywise. “Insurers evaluate fitness on a case-by-case basis. Depending on the policy, as well as other factors such as the provider and the reason the fitness program was prescribed, fitness programs may be covered.”
Defining quality fitness care for cancer patients is at the core of what insurers approve or deny.
“In the eyes of insurers, a general gym membership is different from a program with clinical control, as well as documented medical needs and measurable outcomes,” Weller said.
Here’s what cancer patients can do
Patients battling cancer have more fitness coverage paths than they may think.
“They may wish to discuss rehab and wellness programs with their oncology team,” Weller said. “Many of these programs require patients to have insurance, so patients may wish to check their insurance benefits. Patients may also want to obtain a medical necessity letter. Coverage may be denied, and in that case, patients can review the reason and appeal the denial.”
In the meantime, cancer fighters don’t have to wait for insurance coverage or a gym membership to start incorporating it into their lives. There are plenty of ways to exercise at home with little to no equipment.
“For cancer patients, the key is finding activities that are appropriate for their abilities and treatment circumstances, with guidance from their medical team,” Koehler said. “Walking, simple strength exercises, and other accessible forms of movement can help patients maintain their strength and stay active.”
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Brian O'Connell is a US based former Wall Street bond trader and author of two best-selling books: "The 401k Millionaire" and "CNBC's Creating Wealth". His work is featured on national finance and business platforms like TheStreet.com, CBS News, CNN, The Wall Street Journal and Forbes
