11/14/2025
🔈 Today it’s hard to imagine life without insulin — the medicine that saves millions of people with diabetes every single day. But few know whom we truly owe for this discovery.
Not only the scientists…
But the dogs who became the first heroes and participants of a great medical breakthrough 🐶✨
🔬 1921. Toronto. The beginning of a great discovery
In the laboratory of the University of Toronto, a young surgeon Frederick Banting and medical student Charles Best were conducting a series of bold experiments.
They wanted to unravel the mystery of diabetes — a disease for which there was no cure at the time.
Scientists understood that the secret lay in the pancreas, but no one knew how to extract the substance that could lower blood sugar.
🧪 Dogs were used in the experiments.
The researchers surgically removed the pancreas from the animals — and the dogs developed diabetes.
Their blood sugar levels rose sharply, and they lost weight and strength…
But then the researchers achieved the unbelievable — they isolated a special extract from pancreatic islet cells, which they called isletin.
When this extract was injected into a sick dog, its blood sugar level dropped!
The animal revived, began to eat, move, live again.
📅 July 27, 1921 — the day the hypoglycemic effect of what would become insulin was proven for the first time.
🏅 This is how the hormone that saved millions was born
Thanks to these experiments, the scientists discovered the substance later named insulin (from the Latin insula — “island”).
Soon the first injections were given to humans, and in 1922 a teenager named Leonard Thompson became the first patient whose life was saved by the hormone 💉💙
🐕 The dogs never received a Nobel Prize.
They never made it into physiology textbooks.
But they were the first to help prove that diabetes can be controlled.
Every insulin injection, every life extended — is also a tribute to those loyal animals thanks to whom humanity found a path to salvation 💫
☝🏻 A little something to think about
When you inject insulin, remember these four-legged heroes.
They didn’t know they were becoming part of history.
But they gave life to millions of people.
🐾 Insulin is not just a hormone. It is a memory of kindness, science, and devotion.
🐾 🐾 🐾 🐾 🐾 🐾 🐾 🐾 🐾 🐾 🐾 🐾