[1][2][3] He was born on 23 August 1888 at Kvam (in the present-day Steinkjer Municipality in Trøndelag county, Norway).
[4] In 1934 at Oslo University Hospital, Følling saw a young woman named Borgny Egeland.
The children, he concluded, had excess phenylpyruvic acid in the urine, the condition which came to be called phenylketonuria (PKU).
With a special diet low in phenylalanine, PKU newborns can grow and develop into normal children and adults.
[6] It has been said that: "Følling is by many considered the most important medical scientist not to receive the Nobel Prize for Physiology or Medicine".