Dietary supplements are a legitimate part of the high-performance athlete`s preparation It was concluded, after 3 days of intensive discussion, that dietary supplements are a legitimate part of the high-performance athlete`s preparation that, when used appropriately, can play a role in maintaining good health, supporting effective training and optimising performance in competition. This marks a major departure from the previous stance that discouraged supplement use because of the potential for harmful effects. These conclusions were summarised in an Expert Statement that appeared on the IOC website shortly after the meeting.5 It was also recognised, however, that the evidence for the efficacy of many of the supplements used by athletes is limited and that even where some evidence does exist, little is derived from studies of elite athletes and few studies have used experimental models that resemble sporting contests. The Expert Statement also continued to emphasise that the use of supplements is not without some risks, especially for those athletes liable for testing for the use of prohibited substances. Serious adverse effects of supplements are fortunately rare, but include impairments of health and performance as well as the potential for unwitting ingestion of substances that are prohibited under the antidoping codes that govern elite sport.
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