Question 1

What are the different types of insulins used in diabetes treatment?

Accepted Answer

Insulins are categorized by their onset and duration of action. Rapid-acting insulins (insulin lispro/Humalog, insulin aspart/NovoLog) are taken with meals. Long-acting (basal) insulins (insulin glargine/Lantus, Basaglar; insulin detemir/Levemir) provide steady background coverage. Premixed formulations combine both. Most people with type 1 diabetes use a basal-bolus regimen; type 2 diabetes management varies widely.

Question 2

How does insulin control blood sugar?

Accepted Answer

Insulin is the key hormone that allows glucose to enter cells for energy production or storage. After a meal, blood glucose rises and normally triggers pancreatic insulin release. In type 1 diabetes, the pancreas produces no insulin; in type 2 diabetes, insulin production is insufficient or cells are resistant to its effects. Exogenous insulin corrects these deficits by binding insulin receptors on muscle, fat, and liver cells, promoting glucose uptake and reducing glucose production.

Question 3

What is the biggest risk when taking insulin?

Accepted Answer

Hypoglycemia (low blood sugar) is the primary risk with insulin therapy. Symptoms progress from shakiness, sweating, and confusion at mild levels to seizures and loss of consciousness if severe. Hypoglycemia can be triggered by too large a dose, skipping meals, unusual exercise, or alcohol consumption. Patients should always carry fast-acting glucose (glucose tablets, juice) and wear medical ID. Severe hypoglycemia requires emergency treatment.

Question 4

How should insulin be stored?

Accepted Answer

Unopened insulin vials and pens should be refrigerated (36–46°F / 2–8°C) until the expiration date. Once in use (opened or punctured), most insulin formulations can be kept at room temperature (below 86°F / 30°C) for 28–30 days — check the specific product labeling. Insulin should never be frozen or exposed to direct sunlight or extreme heat, as this degrades the protein and reduces its effectiveness.

Insulins

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How do insulins work?

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