Creatine, a dietary supplement used by many athletes to increase muscle bulk, could lead to cancer, a French government agency said today.
The French Agency of Medical Security for Food (AFSSA) said in a report published on its Internet site that the use of creatine constitutes a risk that has not been sufficiently evaluated, particularly in the long term.
The report said there is a potential carcinogenic risk for users of the product, which is sold over the counter in many countries and is not banned by the International Olympic Committee (IOC). It is often described as a legal steroid.
The AFSSA report quoted epidemiologic studies that showed creatine causing digestive, muscular and cardiovascular problems.
The report also said the use of creatine should be regarded as contrary to the rules, spirit and significance of sport and suggested consideration should be given to it being added to the list of banned products.
Former French rugby coach Pierre Berbizier created a storm last month when he said the use of creatine was common in the French championship.
The dietary supplement has been used by many leading sports people, including French tennis player Mary Pierce and baseball player Mark McGwire.
The sale of creatine is banned in France, however, and it is also banned by the French Rugby Union. - Reuters