01 / The world before
Diabetes had few effective treatments before insulin.
02 / The discovery
Researchers isolated insulin and developed its therapeutic use.
03 / The people
Banting, Macleod, Best, Collip and many later teams.
04 / The obstacles
Access and affordability remain serious problems.
05 / The world after
Insulin changed the treatment of diabetes.
06 / Why it still matters
Medicine only helps when people can obtain it.