It was an older movie, probably 80's-ish era. Medium budget. Scientist was trying to defy the aging process. Girls he used were young teens, and the process killed them, I think.
I only caught the end, when the hero, a black guy, was trying to stop the scientist from draining the youth and/or special talents of a very attractive, rather young-looking teen girl who was lying unconscious on an elevated table with kind of psychedelic images on the machine's monitors along with the typical flashing lights and fancy dials/switches everywhere. The black guy was flabbergasted and appalled by what he saw and tried to talk some sense to the scientist, who was not receptive whatsoever. The dialogue was incredible, and I think music was somehow involved with the plot.
This could have been a 70's or possibly even a late 60's flick, but I saw it within the last 5 years. I live in Northern California and had Comcast at the time.
Please help, it's driving me bonkers! Thanks very much. - Seth