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Modern WisdomHow Catching Covid Can Change Your Personality - Dr Diana Fleischman | Modern Wisdom Podcast 290
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At a glance
WHAT IT’S REALLY ABOUT
How COVID, Inflammation And Illness Quietly Rewire Your Personality And Desires
- Chris Williamson and Dr. Diana Fleischman explore how infections—especially COVID—can temporarily or permanently shift personality, mood, social behavior and sexual desire through inflammation-driven “sickness behavior” (lassitude).
- They connect evolutionary psychology with real-world phenomena: why we crave familiar food and people when ill, why chronic inflammation can mimic depression or introversion, and how disease threats nudge individuals and societies toward conformity and conservatism.
- The conversation broadens into pathogens’ role in mental illness, life-history strategies (live fast vs. slow), changing sexual dynamics post‑COVID, and the ethical/pandemic risks of animal agriculture and the promise of “clean meat.”
- Underlying it all is a challenge to modern dualism: our sense of a sovereign, rational self is far more biologically and evolutionarily constrained—and predictable—than we like to admit.
IDEAS WORTH REMEMBERING
5 ideasRecognize lassitude as an adaptive sickness state, not just ‘feeling off.’
Fatigue, emotional sensitivity, withdrawal, and heightened pain or rejection sensitivity during illness are part of an evolved program (lassitude) that conserves energy and elicits care, rather than mere weakness or laziness.
Avoid reflexively suppressing fevers and forcing food when ill.
Fever is generally beneficial for fighting pathogens, and digestion is energetically costly and immunologically risky; pushing antipyretics and “you must eat” can work against the body’s evolved strategies for recovery.
Expect temporary personality shifts during and after infections—especially toward caution and conservatism.
High inflammation and perceived pathogen threat reliably reduce openness, risk-taking, novelty-seeking, and extroversion, pushing people toward familiar foods, known relationships, and more conformist behaviors.
Consider chronic inflammation as a hidden driver of mood and cognitive changes.
Conditions like obesity, long COVID, and other inflammatory states can sustain “sickness behavior” (brain fog, low motivation, social withdrawal, anxiety) long after an acute illness seems over; anti-inflammatory strategies may modestly improve emotional resilience.
Understand that illness can fundamentally change relationship dynamics and attraction.
Because traits like energy, extroversion, openness, and libido are costly, serious or chronic illness can alter a partner’s behavior and perceived mate value, making “in sickness and in health” a deeper psychological commitment than most people realize.
WORDS WORTH SAVING
5 quotesLassitude is the emotion of being sick – the whole suite of feeling tired, cold, in pain, and needing care.
— Dr. Diana Fleischman
When you’re sick, your fundamental goals really change.
— Dr. Diana Fleischman
In sickness and in health really means: I’ll stay even if your personality fundamentally changes.
— Dr. Diana Fleischman
Nature is, in some fundamental sense, just a suffering cesspool.
— Dr. Diana Fleischman
Until I can hold my evolved psychology at arm’s length, I’m going to be too into it to actually figure out what’s going on.
— Dr. Diana Fleischman
High quality AI-generated summary created from speaker-labeled transcript.
