Does the brain not fully mature until 25

Yes, research shows that the brain continues to mature until around the age of 25. During this period, known as a critical or sensitive period of development, the brain exhibits significant plasticity, meaning it can adapt and change in response to experiences. Andrew Huberman explains that from birth to approximately age 25, the brain undergoes substantial reorganization. This involves reinforcing useful neural connections while eliminating those that are less effective—a process referred to as pruning.

At around age 25, the capacity for neuroplasticity does not vanish entirely; rather, it becomes more limited, requiring more intentional effort to engage in meaningful brain changes as an adult. 1 2. Hence, while individuals may not stop learning or adapting after 25, the mechanisms and ease of plasticity shift, emphasizing the importance of tailored approaches to learning and development in adulthood.