In 2005, a research team led by University of Zurich economics professor Ernst Fehr published a study in the journal Nature that provided evidence for the first time that intranasally administered oxytocin can increase trusting behavior in humans. Oxytocin is a hormone and neurotransmitter produ...
Source: [Phys.org](https://phys.org/news/2026-08-oxytocin-nudges-distrustful-men-invest.html)