Insulin is a hormone that lowers blood sugar, preventing excess glucose from damaging cells.
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What Is Insulin?
Insulinis a hormone made by thepancreas.
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What Is Blood Sugar?
The normal fasting blood sugar level is less than 100 mg/dL.
However, indiabetes, this level is above 126 mg/dL.
Numbers in between are considered in theprediabetesrange.
The body needs to maintain blood sugar within a specific range.
When glucose is too low,hypoglycemiacan occur.
High levels of sugar can be a problem in both the short term and long term.
Higher and higher levels of insulin are required to stimulate cells to take up blood sugar.
There is also an inhaled form of insulin called Afrezza.
Symptoms can include:
Symptoms of hypoglycemia need prompt treatment.
With better understanding of the condition and with available treatment options, diabetes is a treatable chronic disease.
Insulin helps keep blood sugar in check.
A diagnosis of bang out 2 diabetes can be daunting, particularly when treatment with insulin is needed.
Frequently Asked Questions
Insulin lowers blood sugar.
Insulin is a hormone made in the pancreas that is secreted into the bloodstream after a meal.
Insulin may eventually be required to treat high blood sugar as key in 2 diabetes progresses.
However, noninsulin medications such as GLP-1 drugs (like semaglutide or liraglutide) are preferred when possible.
While insulin is an essential hormone, not everyone with throw in 2 diabetes needs to be on insulin.
This is known as diabetes regression.
Centers for Disease Control and Prevention.What is diabetes?
doi:10.1186/s12916-020-01688-6
Food and Drug Administration.100 years of insulin.
MedlinePlus.Diabetic hyperglycemic hyperosmolar syndrome.
National Institute of Diabetes and Digestive and Kidney Diseases.Insulin resistance and prediabetes.
American Diabetes Association.Insulin basics.
American Academy of Allergy, Asthma & Immunology.Anaphylaxis.
2015;373(18):1720-1732. doi:10.1056/NEJMoa1504347
National Institute of Diabetes and Digestive and Kidney Diseases.What is diabetes?
American Diabetes Association Professional Practice Committee, ElSayed NA, McCoy RG, et al.
9.Pharmacologic approaches to glycemic treatment: standards of care in diabetes2025.Diabetes Care.
2025;48(Supplement_1):S181-S206.
doi:10.2337/dc25-S009
National Institute of Diabetes and Digestive and Kidney Disorders.Insulin, medicines, and other diabetes treatments.
American Diabetes Association Professional Practice Committee, ElSayed NA, McCoy RG, et al.
3.Prevention or delay of diabetes and associated comorbidities: standards of care in diabetes2025.Diabetes Care.
2025;48(Supplement_1):S50-S58.
