BMJ 2008; 336 doi: https://doi.org/10.1136/bmj.39583.480162.BE (Published 22 May 2008) Cite this as: BMJ 2008;336:1198

A double blind study found no consistent evidence that exposure to mobile phones produces symptoms. The study involved three large groups of volunteers (almost 500 in total) who were exposed to radiofrequency electromagnetic fields emitted by mobile phones in one session, and sham signals in a different session (Psychosomatic Medicine 2008;70:345-8; doi: 10.1097/PSY.0b013e31816521f1).

Stories about artificial hips that squeak are reaching Minerva’s ears. The problem occurs in hips made from highly durable ceramic materials that came on to the orthopaedic market in 2003. Before these, squeaking was rare. With the popularity of these ceramic hips, the problem is becoming widespread and disrupting daily life. Some people squeak as they walk, and one man explains that the squeaking starts as soon as he initiates sex with his wife. X rays confirm perfect alignment, so it doesn’t seem to be a fault in the positioning of the prosthesis that causes the problem (New York Times 11 May 2008; www.nytimes.com/2008/05/11/business/11hip.htm).

On International Day for …

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