Longevity UnmaskedLongevity Unmasked

Question 21 of 433

Does mindset really change biology?

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The short answer

Yes, within limits. Optimism, expectation, and a sense of control have measurable effects on stress hormones, blood pressure, pain, immunity, and survival.

In a study of about 70,000 women and 1,400 men followed for decades, the most optimistic people lived 11 to 15 percent longer than the least optimistic, and were far more likely to reach 85. The placebo effect is real enough that every drug trial must control for it. People who believe they have some command over their health take their medicines, keep their appointments, and exercise.

The limit is this: belief does not dissolve plaque or shrink tumors. Use mindset as fuel for action, never as a replacement for treatment.

“This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship.” From the book’s medical disclaimer. Full disclaimer

Evidence scope
OBSERVATIONAL for optimism and survival; HUMAN EXPERIMENTS for some expectation and symptom effects.Evidence grade (draft mapping)CObservationalPart 2, Q21 · Part sources
All of Part 2

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