sourced story
1921–22General sourceWell documented

Insulin saves diabetics

On the timeline · around 1921–22 · Insulin saves diabetics191019151920192519301935

What happened

Banting and Macleod's team isolated insulin; a dying diabetic teenager recovered within days of the first injections.

Why it matters

Turned type 1 diabetes from a death sentence into a manageable condition — one of medicine's fastest triumphs.

Sources