קיצור: (עם הדגשה)
there simply is no cause and effect that can be made here.
they used a questionnaire that relied on subjects' memories of their previous supplement use.
no one really knows what kind of supplements the subjects were using! Androstendione was included in the list of 30 different kinds of "muscle-building supplements" alongside creatine and protein powders. The prohormone androstenedione is not a dietary supplement—it's essentially an anabolicdrug.
3 סיבות להמנע מלהתבסס על המחקר, סליחה "שאלון" הזה.