Why Brains Need Friends

We all know the importance of a good diet, sufficient exercise and a good night's sleep, but there's one more essential thing we all need to be healthy. Social connection. Simply put, our brains need friends. Neuroscientist Dr. Ben Rein reveals exactly what is happening in our brains when we interact with friends, family, even strangers, and how exactly this affects our physical and mental health… the many benefits of a good social life and the real risks of isolation and loneliness . He also offers simple tips on how we can be more social and to make better use of one of the most powerful, easiest, and cheapest ways to a healthy, happy life. (Hint: Next time you think you are too busy to call or text that friend…pick up the phone and connect). For more information, transcripts, and all episodes, please visit For more about Weill Cornell Medicine Neurological Surgery, please visit

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Why Brains Need Friends is an episode from This Is Your Brain With Dr. Phil Stieg by Dr. Phil Stieg.

This episode is 29:21 long.

This episode was published on Dec 26, 2025.

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