8 People Who Received Their PhDs Before Age 20

Balamural Ambati
Illustration by Christian Sager

Unlike Kim Ung-Yong, Balamural Ambati is happy with being a former child prodigy and the world's youngest doctor. He says graduating from the Mount Sinai School of Medicine at 17 has given him time for other life experiences. As a specialist in ophthalmology, Ambati has written over 40 peer-reviewed publications, including a book on AIDS (co-written with his brother when he was 11).