Respuesta :
I think the correct answer would be insulin. Considerable debate occurs regarding the use of anabolic steroid drugs like insulin in professional athletes and bodybuilders. Insulin is known to be used by athletes in the past as it is helpful and important in building muscle tissues. The use of it was banned in 1988 by the International Olympic Committee.
I believe the answer is: Testosterone
Testosterone is the primary hormonal driver for muscle development. But, having too much testosterone in our system would lead to several negative effect, such as over aggressive behaviour, baldness, impotency, stroke, or even a heart attack.
