Chinese researchers have concluded that tai chi may be able to improve immune status in lung cancer survivors, and thereby potentially help to prevent tumour recurrence. A controlled study was performed in 32 post-surgical, non­-small cell lung cancer survivors who practiced tai chi during a 16-week recovery period. The balance between cellular and humoral immunity (measured by T1 / T2 and Tc1/Tc2 ratios), which potentiates human immunity against tumours, deteriorated in the control group over the course of post-surgical recovery, whilst no such changes were observed in the tai chi group. Cortisol levels were also found to have also increased in the control group, but not in the tai chi group. (Regular Tai Chi Exercise Decreases the Percentage of Type 2 Cytokine-Producing Cells in Postsurgical Non-Small Cell Lung Cancer Survivors. Cancer Nurs. 2012 Oct 9. [Epub ahead of print]).

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