Epidemic of loneliness: Post-COVID update on how emotional isolation damages our health

Credit: USC Annenberg
Credit: USC Annenberg

For two years you didn’t see friends like you used to. You missed your colleagues from work, even the barista on the way there.

You were lonely. We all were.

Here’s what neuroscientists think was happening in your brain.

The human brain, having evolved to seek safety in numbers, registers loneliness as a threat. The centers that monitor for danger, including the amygdala, go into overdrive, triggering a release of “fight or flight” stress hormones…. Subconsciously, you start to view other people more as potential threats — sources of rejection or apathy — and less as friends, remedies for your loneliness.

Mis- and disinformation are distorting science and public policy. Subscribe to our Daily and Weekly Digests for incisive coverage of ‘disruptive’ innovations in AI, agricultural biotechnology, food, chemicals, nuclear energy, vaccines, and other disruptive innovations.

Even before the pandemic, the United States surgeon general, Vivek Murthy, said the country was experiencing an “epidemic of loneliness,” driven by the accelerated pace of life and the spread of technology into all of our social interactions. With this acceleration, he said, efficiency and convenience have “edged out” the time-consuming messiness of real relationships.

The result is a public health crisis on the scale of the opioid epidemic or obesity, Dr. Murthy said. In a 2018 study by the Kaiser Family Foundation, one in five Americans said they always or often felt lonely or socially isolated.

The pandemic only exacerbated these feelings.

This is an excerpt. Read the original post here

Related Articles

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Does glyphosate—the world's most heavily-used herbicide—pose serious harm to humans? Is it carcinogenic? Those issues are of both legal and ...

Most Popular

Screenshot 2026-10-16 at 5.38
PFAS in Agriculture: Science, Uncertainty, and Risk Communication
Discarded Green Cap on Public Trash Can
'Blatant slap in the face': MAHA activists turn on RFK Jr. and Trump administration
newborn baby spit up gerd
Vaccine-preventable congenital infections are a leading driver of autism
Screenshot 2026-10-16 at 11.17
Viewpoint: Latest attack on renewable energy and farmers, new USDA rules could put solar grants out of reach for small producers
ChatGPT-Image-Mar-10-2026-01_39_01-PM
Viewpoint—“Miracle molecule” debunked: Why acemannan supplements don’t work
Government Briefing on Autism Trends
Viewpoint: ‘Statistical murder’: Kennedy’s expanding record of “duplicity and mendacity”
FDA Vials and Syringes Flat Lay
Online gold rush of unapproved peptides is outrunning federal regulators
Screenshot-2026-10-12-at-10.44.38-AM
Widely condemned as unethical, hepatitis B vaccine study funded by RFK Jr’s CDC gets a final greenlight
Screenshot-2026-10-15-at-9.51.15-AM
 Viewpoint: Selective pronatalism: The radical “ethical” case challenging parents’ right to end a pregnancy when a fetus has a severe genetic disorder
Screenshot-2026-10-08-at-10.41.33-AM
Viewpoint: Wellness patches: Most vitamin supplements are useless and sometimes even dangerous, but this craze is even worse
Screenshot-2026-10-15-at-12.13.33-PM
Ahead of the midterms, Meta has paid at least 29 anti-LGBTQ accounts for their posts
Prescription Capsules Scattered on Twenty-Dollar Bills
Facts & Fallacies podcast: America's health care system is broken. A doctor explains how to fix it, Part 2
glp menu logo outlined

Get news on human & agricultural genetics and biotechnology delivered to your inbox.