Stress, relationships & meaning

Loneliness, heart risk, immune research and the cold-challenge study. What the population data mean for a leader surrounded by people all day.

Career success, Erikson, the 1978 lottery study and dopamine. What these ideas explain about a hollow win and what they cannot diagnose.

Laughter, cortisol, pain tolerance and mental health. What small experiments found and why there is no medical dose of comedy.

The midlife dip, Facebook's college rollout, teenage screen time and suicide statistics. Which results apply beyond the original study and which do not.

Stress beliefs, moderate alcohol, wearable scores and social connection. What observational studies can tell you about one imperfect evening.

Loneliness rewrites your genes and suppresses immunity. Why connected leaders are still isolated, and the single relationship that reverses it.

You can win every game and feel nothing the next morning. The three inner drives behind midlife emptiness, and how to audit which one runs you.

Laughter is the best medicine is mostly a myth. What a real laugh actually does to your body, the four humor styles, and why the audience decides.

For decades happiness bottomed out at 47. New data shows the floor moved to the young. What changed, and how to protect a midlifer and a teen at once.

Alcohol is not good for you, and obsessing over your tracker is worse. A doctor on the real drivers of a long life, and why the dinner matters more.