Prayers (all sorts, not just 'healing' prayers) are always answered in the affirmative in a rate that is exactly equal to chance.
The one medicinal prayer I've ever heard that made even a little bit of sense was on an episode of M*A*S*H. The surgeons needed to perform an arterial transplant to save a soldier, but the terminally wounded donor (another soldier) was taking his sweet time about dying. Father Mulcahy said, 'Heavenly Father, I don't know what you're going to think of me for asking this, but if you're going to take him anyway, take him soon, so we can save the other boy.' Struck me as a rather practical sort of prayer.
Boru
The one medicinal prayer I've ever heard that made even a little bit of sense was on an episode of M*A*S*H. The surgeons needed to perform an arterial transplant to save a soldier, but the terminally wounded donor (another soldier) was taking his sweet time about dying. Father Mulcahy said, 'Heavenly Father, I don't know what you're going to think of me for asking this, but if you're going to take him anyway, take him soon, so we can save the other boy.' Struck me as a rather practical sort of prayer.
Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax