One Workout Triggers Anticancer Myokines

In 32 breast‑cancer survivors, blood taken immediately after one session of interval or resistance training suppressed the growth of breast‑cancer cells in vitro, with interval training producing the strongest effect. The study points to muscle‑released myokines—especially IL‑6—as the likely mediators and suggests intensity and muscle mass shape the anticancer response. — This reframes exercise from generic wellness to an acute, dose‑dependent therapy that oncology guidelines and insurers might need to prescribe and reimburse.