It is not safe unless everyone is aware.
Dear Editor,

This is a letter in response to article http://dx.doi.org/10.1093/qjmed/hcu227.1 The authors inform us that the standardization of cupping therapy will reduce the occurrence of adverse effects and help promote the therapy.

Cupping therapy or blood-letting therapy has been used for many centuries by well-known people including George Washington and Mozart. Now the celebrities of our current age are advocates of it. In the past, …