What we may have here is a confusion between healing and cure.
Prayer CAN lead to a cure, but ALWAYS helps healing. It may well please God to grant remission from a disease or injury in response to prayer, but as for healing, that has effects that go past death. A person afflicted with an illness may die, but be healed, and reap the benefits of that healing after death.
Remember the priority Jesus himself revealed. First, he pronounced that the afflicted man’s sins were forgiven him. Then, as a sign to the crowds, so that they might believe, he cured him of his affliction, having first performed the greater work, and given the greater gift. Secular studies concentrate on cure, and ignore healing, unlike our Lord.
Blessings,
Gerry