Supplements such as dhea and androstenedione are termed because they are precursors for testosterone and are thus theorized to increase muscle mass and decrease body fat.

Prohormones

Explanation: Prohormones are the synthetic hormone derived from other materials. They are basically inactive and found in different type of supplements.

They get induced in the body of people to increase the muscles of the body and hormones such as testosterone along with decreasing the overall  fat of body .It is prescribes to take supplement having the prohormone in a limited amount .

answer; i believe the answer is (biomedical); plz check first good luck