Nerve regeneration is the process by which damaged nerves repair themselves. When a nerve is injured, the body can sometimes regenerate the nerve fibers, known as axons, to restore function. This process involves the growth of new nerve cells and the re-establishment of connections with target tissues. The ability to regenerate varies among different types of nerves. Peripheral nerves, which connect the brain and spinal cord to the rest of the body, have a greater capacity for regeneration compared to central nervous system nerves. Factors such as age, the extent of injury, and overall health can influence the success of nerve regeneration.