If a fractured bone is supported by brace or cast and you continue using it nature speeds up healing to meet the need for support?

Nature does not "speed up healing" in response to an external support brace or cast. While these medical devices can provide stability and immobilization, healing is a natural process that follows a specific timeline. The rate of healing is influenced by various factors such as the type of fracture, individual healing capacity, and overall health, and is not significantly affected by continued usage of the supported limb.