Why are some patients of diabetes treated by giving injections of insulin?

Why are some patients of diabetes treated b-y giving injections of insulin ?

Why are diabetes patients treated by insulin injections ?

Give scientific reasons for the following statements: The diabetic patient is given injections of insulin.

Write the missing correlated terms. Diabetes mellitus : Hyposecretion of insulin :: __________ : hypersecretion of insulin.

How was diabetic patients treated in earliertimes?

Urine of a diabetes mellitus patient consists of

Urine of a diabetes mellitus patient consists of

What is the injection administered to diabeteic patients? Why is it given as injection and not as oral pills?