Few people change how the world thinks, but Frederick Banting, born in 1891 in Alliston, Ontario, Canada, did exactly that. He is remembered for helping discover insulin to treat diabetes.
Banting was determined. He kept working through months of failed experiments in a hot, cramped laboratory.
In 1921, Banting began experiments with Charles Best in Toronto that led to insulin. Then, in 1922, Banting helped give the first insulin treatment to a boy with diabetes.
In 1923, Banting shared the Nobel Prize in Physiology or Medicine. (Insulin: a substance the body needs to use sugar for energy.)
Banting died in 1941. Insulin has kept millions of people with diabetes alive.