If you have
type 1 diabetes—or if you have
type 2 diabetes and other diabetes medicines are not
controlling your blood sugar—you have to take
insulin. If you have
you may need to take insulin if diet and exercise have not been able to keep
your blood sugar levels within your target range.
With little or
no insulin, sugar (glucose) in the blood cannot enter your cells to be used for
energy. As a result, the sugar in your blood rises above a safe level. When
your blood sugar rises past about 180 mg/dL, your kidneys begin to release
sugar into the urine, which can make you
dehydrated. If you are dehydrated, your kidneys make
less urine, which means your body can't get rid of extra sugar. This is when
blood sugar levels rise.
Taking insulin can prevent the symptoms of high blood sugar and emergencies
diabetic ketoacidosis (in type 1 diabetes) and
hyperosmolar coma (in type 2 diabetes). Insulin also
can help lower blood sugar, which can prevent serious and permanent complications from long-term high blood
The three most important elements of success in giving insulin injections
- Making sure you have the right dose of insulin,
especially if you are giving two types of insulin in the same
- Practicing how to give your injection.
the insulin properly so that each dose will work effectively.
How to prepare and give an insulin injection