Only about 300 to 400 people a year give a kidney to someone they never met. It's an act of generosity so unusual, a neuroscientist studies the people who do this.
About 300 Americans a year give a kidney to a complete stranger. Researchers have studied the brains of these very generous people, and say they may feel others' pain more than the average person. (This story first aired on All Things Considered on November 28, 2024.)
About 300 Americans a year give a kidney to a complete stranger. Research says these people have a larger amygdala -- perhaps making them feel others' pain more than the average person.