Hey Briut,
I don't know how those scientists conducted their experiments, but their results seem to fly in the face of empirical evidence. After a fall, I feel physically drained and I notice a temporary decline in my physical strength. I just don't feel so enthusiastic about going to the gym and lifting heavy weights for an hour after wasting seed.
Also, back in my addict days, I may not have become literally blind, but I was totally numb to the beauty in the world around me. My thought lacked clarity and logic and my judgement was not sound. I am certain from my experience at least, that this disease does cause a sort of spiritual blindness, if not a physically diagnosable one.
I guess that that the best thing is to let common sense and God's law be our guide because I don't think we'll ever know the whole truth.
Anyway, thanks for your comments and I hope you're well.
TC,
DL