I think the problem with steroids is there just isn't enough study on the long term effect of steroids, and since every steroids is different, even if there is a long term study in one specific steroid, it's not true for other forms. Someone mentioned that steroids doesn't affect just the injured area, but the whole body. That is true and that's what concerns physicians. The increased level of hormones in the body causes a reaction system in your body, where the elevated X amount of hormones increases the X amount of blood level which increases X of another hormone that affects the X amount of this and that. I mean, we have had the NFL for over 100 years and we are still discovering the effect of head trauma during games. I think it's just too difficult to prove the efficacy of steroids today.