Evidence Explorer · MS-N055

Yoga during radiotherapy for breast-cancer quality of life

Family: Yoga and rehabilitative supportive care
Clinical question: Does a structured yoga program during breast-cancer radiotherapy improve fatigue or quality of life?
Evidence label: Some durable physical-quality-of-life benefit; not consistently better than active stretching.

Evidence at a glance

• Benefit: A three-arm trial found better physical-component quality-of-life scores after radiotherapy versus waitlist; active stretching narrowed the comparison.
• Certainty: One relatively large trial with an active control, plus mixed smaller studies and broader reviews.
• Risk: Movements need adaptation for surgery, lymphedema, neuropathy, balance, cardiopulmonary limits, skin reactions, and bone fragility.
• Cancer control: Not studied.

What was studied

A randomized trial enrolled 163 women with stage 0–III breast cancer receiving six weeks of radiotherapy: yoga 60 minutes three times weekly (53), matched stretching (56), or waitlist (54). The yoga program combined postures, breath practices, deep relaxation, and meditation. Outcomes included SF-36 quality of life, fatigue, depression, sleep, and salivary cortisol.

What the evidence shows

Yoga produced greater increases in SF-36 physical-component scores than waitlist at one and three months after radiotherapy (P=.01 at both time points). The paper did not show a uniform advantage across every symptom or against active stretching; the physical activity and attention in stretching are important comparators. A later small 24-person trial did not find significant effects on SF-36 physical or mental components, fatigue, or sleep, despite biomarker differences. The most defensible reading is that yoga may support physical quality of life for some patients, while effects on fatigue and sleep are not uniformly established.

What this does not show: Cortisol or inflammatory-marker changes do not establish tumor response, recurrence prevention, or survival benefit.

Limits and uncertainty

• Participants and instructors could not be blinded.
• The yoga package combined movement, breathing, relaxation, attention, and group contact; component effects cannot be separated.
• Results depend on program, dose, instructor skill, and comparator.
• A 24-person study was underpowered and largely null for patient-reported outcomes, highlighting uncertainty.

Safety and practical context

Seek an instructor familiar with oncology rehabilitation. Avoid painful end-range loading and adapt for recent surgery, radiation dermatitis, drains, shoulder restrictions, lymphedema, neuropathy, dizziness, severe fatigue, or bone metastases. Yoga should not delay evaluation of new pain, shortness of breath, neurologic symptoms, or marked fatigue.

Questions for the care team

• Are there surgical, skin, shoulder, lymphedema, balance, or bone-health restrictions?
• Is the proposed program similar to the studied, supervised intervention?
• Would an oncology physical therapist or active stretching program be more appropriate?
• Which patient-important outcome will be tracked?

Sources

• Primary three-arm trial (J Clin Oncol; PMID 24590636)
• Primary trial full text (PMCID PMC3965260)
• Small later randomized trial (PMID 36176568)
• SIO–ASCO integrative medicine guideline (PMID 37582238)

Identifiers: PMID 24590636; PMCID PMC3965260; DOI 10.1200/JCO.2012.48.2752; later trial PMID 36176568
Last literature search: October 17, 2026
Record appraised: October 17, 2026

Educational information, not personal medical advice. Decisions about symptoms, supplements, movement, or psychological care during cancer treatment should be made with the oncology team.