#289: The Science of Happiness With Marc Schulz Associate Director Of The Harvard Study Of Adult Development

4 Nov 2025 · 46 min
Episode

4 Nov 2025 · 46 min

0:00

Podcast episode (#289) of Heather Monahan's show featuring Mark (Mark) Schulz, Associate Director of the Harvard Study of Adult Development, discussing what the long-term study and related research reveal about happiness and well-being. Central claims: close social connections (including weak ties) are the primary predictor of health and happiness across the lifespan; loneliness is common (reported rates ~20–50% in surveys) and carries health risks comparable to smoking or obesity; early childhood warmth predicts better adult relationship functioning but is not deterministic; relationships affect biology (gene expression, inflammation, antiviral responses) and cognitive decline; adults can change and build social skills at any age. The guest also promotes his book The Good Life (released around the interview) and offers practical steps (take stock of your social universe, strengthen energizing relationships, reach out, add social 'habits' like regular walks or calls). The episode includes sponsor ad segments.

Questions this episode answers

It started in the 1930s (the study is entering its ~85th year).

About 724 original participants (two-thirds from disadvantaged Boston neighborhoods, one-third from Harvard).

Approximately 20% up to as much as 40–50% in some studies.

He said that colleague's TED Talk became the ninth most watched TED Talk of all time.

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