Hi @emimoron. An interesting topic, I had already heard that learning another language offers protection against diseases such as Alzheimer's, I imagine that children who grow up speaking two or more languages have even less risk of developing it later in life, in addition to the multiple benefits it gives them. In today's world children discover early that there are other languages, helped by television and the internet, my son sometimes puts cartoons in English, maybe just for the action that happens, but I know that being exposed to another language will surely motivate him to understand it, like your friend who learned Japanese.