Why Are Some Diabetes Patients Treated with Insulin?

5 min read 2026-03-23

Diabetes can look different for every person, and so does its treatment. While some people manage their condition with diet or tablets, others are advised to take insulin.

If you’ve ever wondered why some diabetes patients are treated with insulin, this blog helps you understand the science and reasoning behind that decision.

What is Diabetes?

Diabetes is a long-term condition that affects how your body controls blood sugar. Insulin, a hormone made by the pancreas, helps move sugar from your blood into your cells for energy.

When your body doesn’t make enough insulin or can’t use it properly, sugar stays in the bloodstream. Over time, this leads to high blood sugar and diabetes-related complications.

The Role of Insulin in Diabetes

In type 1 diabetes, your immune system attacks and destroys the insulin-producing beta cells in the pancreas. As a result, your body produces little to no insulin, making lifelong insulin therapy essential for survival.

Type 2 diabetes typically involves insulin resistance, in which your cells don’t respond to insulin, and your insulin-producing cells gradually stop working.

When Is Insulin Used in Type 2 Diabetes?

While many people with type 2 diabetes start with lifestyle changes and oral medications, insulin becomes necessary at the later stages of the disease 4 when there is an absolute deficiency of insulin.

Research and clinical reviews indicate that insulin is typically introduced in these situations:

When oral treatments and lifestyle changes don’t achieve target glucose levels
When your pancreas can no longer secrete adequate insulin due to progressive beta-cell failure
During periods such as surgery or illness, insulin requirements may rise sharply.

Why Can’t You Use Other Treatments Always?

The right diabetes treatment depends on your individual needs and how the disease progresses. Pills are often used for mild cases, while insulin is used when pills aren’t enough.

Early insulin can help preserve insulin-producing cells, but it carries risks such as low blood sugar and weight gain. Newer medicines, such as GLP-1 or SGLT2 drugs, offer benefits, including heart protection, highlighting the importance of personalised treatment.

Disclaimer

The information provided herein is only intended to bring general awareness among the patients, and the same shall not be considered as a substitute for prescription or medical advice. Patients shall consult the registered medical practitioners before buying or taking any prescription drugs. USV Private Limited does not promote the use of any drug nor validate the studies referred herein, and disclaims all the liabilities arising from the use of the information or any drug. Copying, circulation, and distribution of this content is strictly prohibited.