Back in the day, it was believed that neurons weren’t able to divide and multiply after early childhood. However, it is now known that this does happen. The neurons are capable of forming new connections, but in certain areas of the brain, they can also multiply and increase in number. One of the main drivers of this process is Brain-Derived Neurotrophic Factor (BDNF), which is a type of growth hormone that functions in the brain (20).
By doing this, it may be effective at delaying or even reversing many brain diseases and age-related decreases in brain function (25).
There is also the possibility that it could help improve memory and make you smarter. Makes sense given its effects on BDNF levels, but this definitely needs to be tested in human controlled trials (26).