As reported last week by the Boston Globe's Stat News, 14 Olympic sports federations — including USA Gymnastics and USA Track & Field — have signed sponsorship deals with dietary supplement manufacturers.
In addition, hundreds of individual athletes have personally endorsed various vitamin and other supplements, including protein shakes and energy drinks.
Yet, as Stat News reporter Rebecca Robbins notes, there is “little scientific backing” that these products “provide a nutritional or energy boost [or] ward off common problems like muscle cramps."
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