We find many stories in Bible also where Jesus cured the disease of many people. How was Jesus healing people. Here is the scientific reason.
Human mind is the most difficult and mysterious part of universe. It has numerous powers that can do unlimited miracles which even the present science and technology can't do. One of the powers of mind is healing power that works with the faith of the person himself. But most of the people have lost this power due to the lack of faith and practice. Either Jesus or Krishna they healed diseases by activating the healing power of the patients themselves backed by their faith towards God.
Discovered by +Don Prince