One Exercise Session Could Slow Breast Cancer Growth Significantly: Study Shows

Published On 2025-09-16 02:45 GMT   |   Update On 2025-09-16 09:05 GMT
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A recent study published in Breast Cancer Research and Treatment highlights the powerful impact of exercise on breast cancer survivors. According to the National Cancer Institute, there were an estimated 18.6 million cancer survivors in the United States as of May 2025. Globally, cancer remains a leading cause of death, with millions affected each year, underscoring the importance of effective prevention and care strategies.

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Exercise plays a crucial role in promoting healthy living and combating cancer. It helps regulate metabolism, reduce inflammation, and boost the immune system—key factors that contribute to slowing cancer progression and improving overall well-being.

Researchers in Australia focused on women who survived breast cancer, comparing the effects of a single session of resistance training (weightlifting) and high-intensity interval training (HIIT). Both workouts lasted about 45 minutes. The study found that immediately after exercising, participants showed up to a 47% increase in myokines—proteins released by muscles during exercise that reduce inflammation and regulate metabolism. These myokines can help slow cancer cell growth by 20 to 30%.

The study involved 32 breast cancer survivors who had completed treatment for stages one to three at least four months prior. Resistance training included exercises like chest press, leg curls, and lunges, while HIIT involved intense bursts on machines such as treadmills and stationary bikes.

Lead researcher Francesco Bettariga explained that both exercise types produced similar anti-cancer effects, suggesting workout intensity rather than exercise type is the main driver of benefits. These findings provide valuable insight into exercise as a vital component of cancer care.

Reference: Bettariga, F., Taaffe, D.R., Crespo-Garcia, C. et al. A single bout of resistance or high-intensity interval training increases anti-cancer myokines and suppresses cancer cell growth in vitro in survivors of breast cancer. Breast Cancer Res Treat 213, 171–180 (2025). https://doi.org/10.1007/s10549-025-07772-w

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Article Source : Breast Cancer Research and Treatment

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