Celibacy and contradiction with modern medical science

Buddhism stress on Celibacy at the same time insists on revoking everything that could not be proved by scientific method or rational thought . I am a graduate student of physics and I found that modern medical science or the proponents of medicine recommends controlled masturbation as a healthy way to relieve sexual desire or tension. I find it contradictory that what the medical practitioners found by scientific methods is completely against the view of masturbation in Buddhism and still Buddhism as far as I know advocates the scientific method be more fruitful than the intuitive way of reasoning. Is it contradictory?