I wonder whether this is a situation in which the ideal and the actual are different, considering the deterioration of the generations (??????? ??????). One should be able to overcome the constraints and limitations of the physical world through the connection to Hashem. However, in today’s times, it is hardly possible to achieve that. Even the greatest gedolim of our recent generations who have sometimes accomplished the “impossible” have been clear that this is not something on which we can rely.
It might be worthwhile to review the writings about the statement by Chazal – ???? ???? ???? ????? ??????. We repeat the recognition that all healing is directly from Hashem. We say it in ??? ??? and in ?????. Yet, the obligation to utilize doctors is in no way a shortcoming in ?????. The ?????? discuss this, and there is also ample discussion about it in the works of ???????. So Rav Brody’s statement is academically accurate, but is not the halacha we must follow. References available.