WASHINGTON (AP) — Defense Secretary Pete Hegseth announced Wednesday that he is rolling out a new screening program for “testosterone deficiency” among troops, calling it necessary to allow them to operate at their “absolute best.”

The new screenings will be conducted annually as part of service members’ required medical screenings for those 30 and older, he said. Troops under 30 can volunteer to be tested. In a video released on social media, Hegseth simply refers to troops, though it appears he is referring only to testing men in uniform for hormone irregularities.

The Pentagon would not offer specific conditions or diseases that were being targeted by the policy. In his video, Hegseth said receiving testosterone replacement therapy will be voluntary.