My golfing friend wrote to me asking if I have read the latest in The Telegraph.
"But Cockroach Catcher, you wrote about it in July of last year! Some even had bladder cancer!"
I suppose Medicine is still of great interest to me and one should never accept what is known now as the whole truth. Medicine cannot stagnate nor should we forget basic principles.
One of the participants in the trial, David Jose, 51, from Clifton, near Bristol, had a hip "resurfacing" operation in 2007, a year before retiring as a police officer.
The father of two had been suffering hip pain from playing football and rugby.
In May last year he was told that the tests had found atypical cells which were not at this stage cancerous.
He saw Angus Maclean, an orthopaedic surgeon at Southmead Hospital involved in the study, who said that the trial had established three cases in which patients had developed bladder cancer, and 14 more including Mr Jose who had changes to their chromosomes.
The doctor told him researchers "could not believe" what had been found, describing the findings as "shocking".
Not as shocked as my friend.
I will reprint my blog post: