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Why was the development of recombinant insulin important in 1982?

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Rows of genetically modified barley plants grow in an outdoor test plot in Germany, with a yellow marker labeled 3 and protective netting overhead. — genetically modified organism Genetically modified crops are assessed for their impact on environmental factors such as soil quality.

The development of recombinant human insulin in 1982 was a landmark achievement in biology and medicine because it marked the first time a clinically important, synthetic human protein was successfully produced as a pharmaceutical product.1

Prior to this development, patients with diabetes relied on insulin extracted from the pancreases of cows or pigs. While these animal-derived products were effective, the ability to use recombinant DNA technology to engineer bacteria—specifically Escherichia coli—to produce insulin that is identical to the human hormone provided a more reliable and scalable supply.12

This innovation demonstrated the practical power of genetic modification to address human health needs by precisely altering genomes to generate essential biological products. It paved the way for the subsequent production of other vital human proteins, such as growth hormone, and remains a foundational example of how biotechnology can ethically and effectively improve medical treatment.13