Pins & Needles (1970)

What should have been an uneventful ride back to campus unexpectedly becomes a nightmare as Max, a diabetic, biology grad student, is entrapped in a diabolical new-age wellness experiment. With her insulin supply dwindling, Max is forced into a deadly game of cat and mouse where she must escape at all costs or risk becoming the next test subject to extend the lives of the rich and privileged.