Kathy Miller, a 10-year cancer survivor, asked Tari: I’ve been practicing yoga since my treatment ended, and I keep hearing that it might help keep my cancer from coming back. Is there any real evidence behind that, or is it more of a general wellness claim?
Tari Prinster’s Response:
This is one of the most common questions I get, and it deserves an honest answer rather than a reassuring one — so let’s start with a distinction that matters: prevention and risk reduction aren’t the same thing. Nothing, including yoga, can guarantee a cancer won’t return. What the research supports is more specific: certain behaviors are associated with a lower risk of recurrence in some cancers, and yoga can be part of how you build those behaviors into your life.
What the strongest evidence actually shows
The clearest current evidence that movement affects cancer outcomes comes from a large randomized trial in colon cancer survivors, where a structured exercise program — not yoga specifically — reduced the risk of recurrence and death compared to health education alone. It’s a significant finding, and it’s specific: a particular cancer type, a particular exercise protocol. It’s not evidence that any movement, or yoga in particular, produces the same effect across all cancers.
National guidelines reflect this broader picture. The American Cancer Society’s guideline for cancer survivors recommends at least 150 minutes of moderate-intensity activity per week, along with strength training at least twice a week — the same general activity target recommended for the general population, not a yoga-specific prescription. Yoga can absolutely count toward that target, and its breath and mindfulness components offer real value exercise alone doesn’t. But it’s most accurate — and more credible to the healthcare providers you’re also trusting with your care — to think of yoga as one way to meet your movement goals, not as a distinct medical intervention with its own separate evidence base for recurrence.
Where yoga’s own evidence stands
Yoga-specific research has looked at a different, related question: can a regular practice shift the biological markers associated with recurrence risk? Several studies in breast cancer survivors have found that a sustained yoga practice is associated with measurable decreases in inflammatory markers linked to cancer biology, alongside improvements in fatigue and quality of life. That’s a genuinely encouraging thread of research — but it’s association, not proof of a causal effect on recurrence itself, and no yoga trial has yet tested that outcome directly. The honest summary is: yoga may support some of the same biological pathways researchers are investigating in relation to recurrence risk, but it hasn’t been shown to prevent recurrence on its own.
What this means for your practice
None of this makes yoga less worth doing — it means being precise about why. Yoga’s best-documented value in survivorship is what you can feel directly: lower fatigue, better sleep, a steadier nervous system, improved strength and mobility, and real support for staying consistent with the broader movement, nutrition, and follow-up care that the evidence does link to better outcomes. Practiced alongside — never instead of — your medical care and screening schedule, yoga is a meaningful part of a survivorship routine grounded in what actually helps you show up for your health, day after day.
Cancer steals your breath. Yoga helps you get it back — and gives you one more consistent way to keep moving forward.
References
- American Cancer Society. Nutrition and Physical Activity Guideline for Cancer Survivors. CA: A Cancer Journal for Clinicians, 2022.
- Courneya, K.S., et al. Structured exercise after adjuvant chemotherapy for colon cancer (CHALLENGE trial). Reported via ASCO, 2023–2025.
- Jain, M., et al. Long-term yogic intervention decreases serum interleukins IL-10 and IL-1β and improves cancer-related fatigue during radiotherapy/chemotherapy in breast cancer patients. Supportive Care in Cancer, 2023.