Published August 12, 2026 at 6:00 AM ET · Updated August 12, 2026 at 10:07 PM ET
Study links birth order to 150 health conditions across 10 million siblings
2 independent outlets are covering this story, first reported here by Mother Jones. Verification: Confirmed (how we verify). Every headline links to the original reporting.
A study of 10 million American siblings found that birth order is linked to 150 different health conditions. The research examined correlations between birth order and various health outcomes across the large sample.
Patriot Watch first flagged this story 17 hr ago, when Mother Jones reported it. Coverage has since grown to 2 independent outlets, including 1 wire/mainstream feed. The most recent report came 3 hr ago from Fox News.
