This is because the 5-alpha reductase enzyme acts to reduce the potency of nandrolone, while in contrast many other anabolic steroids are unaffected by this enzyme, and potency is actually increased by it.
ນີ້ແມ່ນຍ້ອນວ່າ enzyme 5-alpha reductase ເຮັດເພື່ອຫຼຸດຜ່ອນຄວາມສາມາດຂອງ nandrolone, ໃນຂະນະທີ່ໃນທາງກົງກັນຂ້າມຫຼາຍ steroids anabolic ອື່ນໆແມ່ນບໍ່ໄດ້ຮັບຜົນກະທົບໂດຍ enzyme ນີ້, ແລະການສັກຢາຂອງ testosterone ແມ່ນຕົວຈິງແລ້ວເພີ່ມຂຶ້ນໂດຍມັນ.