Neurotrophic factors are a family of proteins that play a key role in supporting the growth, development, and survival of neurons in the nervous system. These factors help to promote the growth of new neurons, regulate synaptic plasticity, and protect existing neurons from damage and degeneration. Neurotrophic factors are essential for proper brain function and have been implicated in a variety of neurological disorders, including Alzheimer's disease, Parkinson's disease, and spinal cord injury. Researchers are studying how manipulating neurotrophic factors may lead to new treatments for these diseases and improve overall brain health and function.