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This disease had existed several years ago but the world was in darkness and ignorance about it and even when it was known the treatment unknown until 1921 when insulin became medically available but before this time many had died. Researchers first gave an active extract of the pancreas containing insulin to a young diabetic patient in 1922, and the food and drug administration (FDA) first approved first approved insulin in 1939. Insulin used for treatment of diabetes is usually derived from beef and pork pancreas and also from human recombinant technology; the FDA approved the first human recombinant insulin for diabetes in 1982. Until recent times diabetes was thought to affect basically the elderly but researches has made it clear that if affects both the old and the young.
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