Several systematic reviews (SRs) have assessed the effectiveness of Tai Chi for many conditions including hypertension, osteoarthritis and fall prevention: however, their conclusions have been contradictory. The aim of this overview was to critically evaluate the SRs of Tai Chi for any improvement of medical conditions or clinical symptoms. English, Chinese and Korean electronic databases were searched for relevant articles, and data were extracted according to predefined criteria: 35 SRs met our inclusion criteria. They were related to the following conditions: cancer, older people, Parkinson's disease, musculoskeletal pain, osteoarthritis, rheumatoid arthritis (RA), muscle strength and flexibility, improving aerobic capacity, cardiovascular disease and risk factors, lowering resting blood pressure, osteoporosis or bone mineral density, type 2 diabetes, psychological health, fall prevention and improving balance, and any chronic conditions. In several instances, the conclusions of these articles were contradictory. Relatively clear evidence emerged to suggest that Tai Chi is effective for fall prevention and improving psychological health and was associated with general health benefits for older people. However, Tai Chi seems to be ineffective for the symptomatic treatment of cancer and RA. In conclusion, many SRs of Tai Chi have recently been published: however, the evidence is convincingly positive only for fall prevention and for improvement of psychological health.
Reproduced with permission from the BMJ Publishing Group.

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