The Physiology of Grief: What Loss Actually Does In Your Body with Mary-Frances O’Connor, PhD.

Falling in love triggers a specific hormonal cascade: oxytocin, dopamine, the whole cocktail that makes you feel like you can't think about anything else. What almost nobody talks about is that losing someone runs that same system in reverse.

Mary-Frances O’Connor, director of the Grief, Loss, and Social Stress Lab, discusses how grief can be understood as a hormonal “withdrawal” from the bonding chemistry of love, debunks the myth of five linear stages, and clarifies the difference between acute “grief” and the longer-term trajectory of “grieving.”

Prof O’Connor explains common emotional, cognitive, and physical manifestations, why the brain both knows a loved one is gone yet still expects them, and how grieving involves intense learning and identity updating. This episode also covers health risks after bereavement, the importance of preventive care and supportive companionship, practical ways to honour loved ones, and how reflecting on mortality can shape meaning.

🎤 EPISODE OVERVIEW
(0:00) Intro & Rapid-Fire Questions
(4:44) Defining Grief vs. Grieving
(6:15) Grief Beyond Death: Divorce, Empty Nests & Identity Loss
(10:17) The Neurobiology of Love, Bonding & Loss
(13:55) Acute Grief and the 21x Heart Attack Risk
(21:13) The Broken Heart Phenomenon & the Case for Bereavement Care
(30:42) Platitudes and How to Actually Support Someone Grieving
(41:02) The "Gone But Everlasting" Theory & Grief as Learning
(47:35) Purple Towels: Identity, Continuing Bonds & Facing Our Own Mortality
(1:15:56) After Party with Dr. Stephanie

📎 RESOURCES MENTIONED https://drstephanieestima.com/podcasts/ep486

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