Other possible side effects of Tren include hair-loss, high blood pressure, acne and even headaches but there are things that must be said. Hair-loss will only occur in men who are predisposed; simply put this means you were going to lose your hair anyway, the Trenbolone hormone simply sped the process up. In many ways we can say the same thing about acne; men who are not predisposed to acne, who keep their skin clean and generally don't have issues to begin with will more than likely be fine; however, while rare some who are not acne prone will still fall prey. Blood pressure and headaches, this is in many cases also individually based; men who are predisposed to high blood pressure should in most cases avoid supplementing with this hormone. However, high blood pressure and headaches can still occur in some men, even those who do not have a predisposition towards high blood pressure. In many cases when these side effects of Tren occur it is due to the dose being too high; not always but the strong majority of the time.