Considering the body of scientific literature to date, what effect do dietary supplements have on performance?
A) None have been shown to improve training or performance.
B) Only a few have been shown to improve training or performance.
C) The majority have been shown to improve training and performance.
D) Nearly all have been shown to have a small training and performance effect.

Question

Quizplus · Accepted Answer

Only a few dietary supplements, such as caffeine and creatine, have been shown to have a positive effect on training and performance in some individuals, while the majority have no significant effect or limited evidence supporting their use.

Considering the Body of Scientific Literature to Date, What Effect