1. Harvard Diet Study “Middle‐Age Spread”—Smart Healthhttps://www.youtube.com/watch?v=k9_8dKc9uJE
2. TED Talk by Laura Carstensen: “Older People Are Happier”
3. http://www.ted.com/talks/laura_carstensen_older_people_are_happier?language=en
4. Middle Age Brains Are Awesome
5. https://www.youtube.com/watch?v=z08A_In0tcw