Health Library

The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.

Spanish Translation

Top of the pageDecision Point

Diabetes, Type 2: Should I Take Insulin?

You may want to have a say in this decision, or you may simply want to follow your doctor's recommendation. Either way, this information will help you understand what your choices are so that you can talk to your doctor about them.

Diabetes, Type 2: Should I Take Insulin?

Get the facts

Your options

  • Take insulin to keep blood sugar levels under control.
  • Don't take insulin. Try other methods to keep blood sugar levels under control.

Key points to remember

  • The goal in treating type 2 diabetes is to keep blood sugar under control. When you control your blood sugar, you decrease your risk for other health problems caused by diabetes, such as eye problems, kidney disease, and nerve damage.
  • Losing weight and increasing activity, along with taking diabetes medicine other than insulin, may be enough to keep blood sugar under control. Controlling blood sugar means staying in your target range.
  • If your disease gets worse and your blood sugar can't be controlled, your doctor will likely suggest that you take insulin.
  • Insulin is the most effective medicine for lowering blood sugar levels to meet target ranges and A1c goals.
  • If you decide to use insulin, you'll learn what type is best for you and how much you'll need to take. And you'll need to know the signs of low blood sugar and what to do if you have a low blood sugar emergency.
  • Starting insulin doesn't mean that you've failed to control diabetes. Type 2 diabetes is often a disease that gets worse over time. Insulin can help people with type 2 diabetes keep their blood sugar under control.
FAQs

How is type 2 diabetes treated?

The goal in treating type 2 diabetes is to control blood sugar levels by keeping them in your target range. Lifestyle changes, such as losing weight and being more active, are the first steps to get blood sugar under control. But you may also need to take a diabetes medicine (such as metformin), which helps decrease the body's resistance to insulin and help insulin work better in the body.

Diabetes often gets worse over time. And when it does, diabetes medicines don't work as well. Insulin can help people with type 2 diabetes keep their blood sugar under control. Sometimes your doctor may recommend insulin because of other health problems, such as kidney complications.

What is insulin?

Insulin is a hormone that helps sugar enter your cells, where your body uses it for fuel. When your body doesn't make enough insulin or can't use it the way it's supposed to, your blood sugar gets too high. This can be serious or even life-threatening.

How is insulin used?

Most people use insulin as an injection, or shot. It is given into the fatty tissue just under the skin. Learning how to give yourself insulin may take some time. You'll also need to pay more attention to your blood sugar levels than you may be used to. But with practice, monitoring your levels and using insulin correctly can become a routine part of your day.

Some people can take insulin through an inhaler. Inhaled insulin works very fast, so it is usually taken right before eating. People who have lung problems or trouble breathing cannot take inhaled insulin.

What are the risks of using insulin?

Using insulin has few risks and side effects. You may gain weight, especially if you are already overweight. The biggest risk of insulin use is very low blood sugar (hypoglycemia), which can turn into an emergency if not managed right away.

Using inhaled insulin may reduce how well your lungs work. If you take inhaled insulin, your doctor will test your lungs every 6 to 12 months using a spirometer. This test is done in the doctor's office and is not painful.

About low blood sugar

Some common reasons for very low blood sugar include:

  • Taking too much insulin.
  • Skipping meals or not eating enough food.
  • Exercising without eating enough, or being much more active than usual.
  • Drinking too much alcohol (especially on an empty stomach).

By checking your blood sugar levels often, taking insulin on a schedule, and eating regular meals, you can avoid low blood sugar.

It's a good idea to know the signs of low blood sugar, which include feeling tired, weak, or shaky. If your blood sugar drops very low and you don't get help, you could get confused or drowsy or even lose consciousness and possibly die.

Most of the time, you can treat mild—and sometimes moderate—low blood sugar by eating something that contains sugar.

What are the benefits of using insulin?

Insulin is the most effective medicine for lowering blood sugar levels. Keeping blood sugar under control reduces your risk for other health problems caused by diabetes, such as eye problems, kidney disease, and nerve damage.

Why might your doctor recommend taking insulin?

If your blood sugar can't be controlled even if you lose weight and take other medicine for diabetes, your doctor is likely to recommend taking insulin.

Compare your options

Compare

What is usually involved?









What are the benefits?









What are the risks and side effects?









Take insulin Take insulin
  • You give yourself insulin 1 to 4 times a day. Most people do this by giving themselves an injection, or shot. Some people may use an inhaler to take fast-acting insulin.
  • You check your blood sugar levels several times a day to make sure that your levels are in your target range.
  • You stay at a healthy weight and get regular exercise.
  • You know the signs of low blood sugar, how to avoid low blood sugar, and what to do in case of a low blood sugar emergency.
  • Insulin is the most effective medicine for lowering blood sugar levels.
  • Keeping blood sugar under control decreases your risk for health problems caused by diabetes. These problems include eye problems, kidney disease, and nerve damage.
  • Taking insulin increases your risk of very low blood sugar, which can be life-threatening if not managed right away.
  • You may gain weight if you take insulin.
Don't take insulin Don't take insulin
  • You check your blood sugar to make sure that your levels are in your target range.
  • You try losing weight and being more active to control your blood sugar.
  • You take diabetes medicine to decrease your body's resistance to insulin. Or if you are already taking diabetes medicine, you may need to increase your dose.
  • You don't have to give yourself a shot.
  • You don't need to have inhaled-insulin-related lung tests.
  • You don't have to worry as much about low blood sugar emergencies that can happen if you take insulin.
  • If your diabetes gets worse, you may not be able to control your blood sugar.
  • You may gain weight while taking some diabetes medicines.
  • You are at risk for high blood sugar emergencies, which can be life-threatening.
  • Uncontrolled blood sugar raises your risk for health problems such as eye problems, nerve damage, and kidney disease.

Personal stories about considering insulin

These stories are based on information gathered from health professionals and consumers. They may be helpful as you make important health decisions.

My mom had diabetes. She had to give herself insulin shots, and it looked so messy and painful. I swore that it would never happen to me. Well, for 8 years now I've had type 2 diabetes. I feel like I've done everything I can at this point. I don't really want to start insulin, but it's more important to me that I stay as healthy as I can. I am going to try the inhaled insulin.

Jeff, age 48

A few years ago my doctor said I had type 2 diabetes. But I didn't feel any different, so I didn't do anything. Then a few months ago, my doctor reminded me what could happen if we couldn't get my blood sugar under control. I got scared. So I've been eating better and checking my blood sugar, and so far, it's working. My numbers are holding. I'm going to keep it up and see what happens.

Maria, age 54

When I found out I had diabetes, I really got motivated. I started walking every day, tried eating better, and lost about 40 pounds. And I took a diabetes medicine. I was able to control my blood sugar for many years before it started creeping back up. Now I'm still pretty healthy, but my levels are out of control. Taking insulin is the next step.

Shannon, age 67

Take insulin? Not me. Not if I can help it. I'm going to lose some weight and exercise more. I've been keeping a blood sugar diary so I can track what makes it spike. I think I can beat this thing without insulin if I work really hard. I'm just not ready to take insulin now.

Mike, age 58

What matters most to you?

Your personal feelings are just as important as the medical facts. Think about what matters most to you in this decision, and show how you feel about the following statements.

Reasons to take insulin

Reasons not to take insulin

I'd rather start insulin now than wait until my diabetes gets worse.

I want to avoid taking insulin as long as I can.

More important
Equally important
More important

I can't control my blood sugar.

I think I can control my blood sugar without insulin.

More important
Equally important
More important

I want to avoid other health problems from high blood sugar.

I'm less concerned about other health problems than I am about taking insulin.

More important
Equally important
More important

I don't mind giving myself shots.

I don't want to give myself shots.

More important
Equally important
More important

Gaining weight from taking insulin doesn't concern me.

I'm worried about gaining weight.

More important
Equally important
More important

My other important reasons:

My other important reasons:

More important
Equally important
More important

Where are you leaning now?

Now that you've thought about the facts and your feelings, you may have a general idea of where you stand on this decision. Show which way you are leaning right now.

Taking insulin

NOT taking insulin

Leaning toward
Undecided
Leaning toward

What else do you need to make your decision?

Check the facts

1, The goal in treating my type 2 diabetes is to avoid taking insulin.
2, Insulin is an effective medicine for lowering my blood sugar levels.
3, Losing weight and increasing activity, along with taking a diabetes medicine (such as metformin), may be enough to keep my blood sugar under control.

Decide what's next

1,Do you understand the options available to you?
2,Are you clear about which benefits and side effects matter most to you?
3,Do you have enough support and advice from others to make a choice?

Certainty

1. How sure do you feel right now about your decision?

Not sure at all
Somewhat sure
Very sure
2, Check what you need to do before you make this decision.

Your Summary

Here's a record of your answers. You can use it to talk with your doctor or loved ones about your decision.

Your decision

Next steps

Which way you're leaning

How sure you are

Your comments

Your knowledge of the facts

Key concepts that you understood

Key concepts that may need review

Getting ready to act

Patient choices

What matters to you

Print Summary

Credits

Credits
AuthorIgnite Healthwise, LLC Staff
Clinical Review BoardClinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
You may want to have a say in this decision, or you may simply want to follow your doctor's recommendation. Either way, this information will help you understand what your choices are so that you can talk to your doctor about them.

Diabetes, Type 2: Should I Take Insulin?

Here's a record of your answers. You can use it to talk with your doctor or loved ones about your decision.
  1. Get the facts
  2. Compare your options
  3. What matters most to you?
  4. Where are you leaning now?
  5. What else do you need to make your decision?

1. Get the Facts

Your options

  • Take insulin to keep blood sugar levels under control.
  • Don't take insulin. Try other methods to keep blood sugar levels under control.

Key points to remember

  • The goal in treating type 2 diabetes is to keep blood sugar under control. When you control your blood sugar, you decrease your risk for other health problems caused by diabetes, such as eye problems, kidney disease, and nerve damage.
  • Losing weight and increasing activity, along with taking diabetes medicine other than insulin, may be enough to keep blood sugar under control. Controlling blood sugar means staying in your target range.
  • If your disease gets worse and your blood sugar can't be controlled, your doctor will likely suggest that you take insulin.
  • Insulin is the most effective medicine for lowering blood sugar levels to meet target ranges and A1c goals.
  • If you decide to use insulin, you'll learn what type is best for you and how much you'll need to take. And you'll need to know the signs of low blood sugar and what to do if you have a low blood sugar emergency.
  • Starting insulin doesn't mean that you've failed to control diabetes. Type 2 diabetes is often a disease that gets worse over time. Insulin can help people with type 2 diabetes keep their blood sugar under control.
FAQs

How is type 2 diabetes treated?

The goal in treating type 2 diabetes is to control blood sugar levels by keeping them in your target range. Lifestyle changes, such as losing weight and being more active, are the first steps to get blood sugar under control. But you may also need to take a diabetes medicine (such as metformin), which helps decrease the body's resistance to insulin and help insulin work better in the body.

Diabetes often gets worse over time. And when it does, diabetes medicines don't work as well. Insulin can help people with type 2 diabetes keep their blood sugar under control. Sometimes your doctor may recommend insulin because of other health problems, such as kidney complications.

What is insulin?

Insulin is a hormone that helps sugar enter your cells, where your body uses it for fuel. When your body doesn't make enough insulin or can't use it the way it's supposed to, your blood sugar gets too high. This can be serious or even life-threatening.

How is insulin used?

Most people use insulin as an injection, or shot. It is given into the fatty tissue just under the skin. Learning how to give yourself insulin may take some time. You'll also need to pay more attention to your blood sugar levels than you may be used to. But with practice, monitoring your levels and using insulin correctly can become a routine part of your day.

Some people can take insulin through an inhaler. Inhaled insulin works very fast, so it is usually taken right before eating. People who have lung problems or trouble breathing cannot take inhaled insulin.

What are the risks of using insulin?

Using insulin has few risks and side effects. You may gain weight, especially if you are already overweight. The biggest risk of insulin use is very low blood sugar (hypoglycemia), which can turn into an emergency if not managed right away.

Using inhaled insulin may reduce how well your lungs work. If you take inhaled insulin, your doctor will test your lungs every 6 to 12 months using a spirometer. This test is done in the doctor's office and is not painful.

About low blood sugar

Some common reasons for very low blood sugar include:

  • Taking too much insulin.
  • Skipping meals or not eating enough food.
  • Exercising without eating enough, or being much more active than usual.
  • Drinking too much alcohol (especially on an empty stomach).

By checking your blood sugar levels often, taking insulin on a schedule, and eating regular meals, you can avoid low blood sugar.

It's a good idea to know the signs of low blood sugar, which include feeling tired, weak, or shaky. If your blood sugar drops very low and you don't get help, you could get confused or drowsy or even lose consciousness and possibly die.

Most of the time, you can treat mild—and sometimes moderate—low blood sugar by eating something that contains sugar.

What are the benefits of using insulin?

Insulin is the most effective medicine for lowering blood sugar levels. Keeping blood sugar under control reduces your risk for other health problems caused by diabetes, such as eye problems, kidney disease, and nerve damage.

Why might your doctor recommend taking insulin?

If your blood sugar can't be controlled even if you lose weight and take other medicine for diabetes, your doctor is likely to recommend taking insulin.

2. Compare your options

Take insulin Don't take insulin
What is usually involved?
  • You give yourself insulin 1 to 4 times a day. Most people do this by giving themselves an injection, or shot. Some people may use an inhaler to take fast-acting insulin.
  • You check your blood sugar levels several times a day to make sure that your levels are in your target range.
  • You stay at a healthy weight and get regular exercise.
  • You know the signs of low blood sugar, how to avoid low blood sugar, and what to do in case of a low blood sugar emergency.
  • You check your blood sugar to make sure that your levels are in your target range.
  • You try losing weight and being more active to control your blood sugar.
  • You take diabetes medicine to decrease your body's resistance to insulin. Or if you are already taking diabetes medicine, you may need to increase your dose.
What are the benefits?
  • Insulin is the most effective medicine for lowering blood sugar levels.
  • Keeping blood sugar under control decreases your risk for health problems caused by diabetes. These problems include eye problems, kidney disease, and nerve damage.
  • You don't have to give yourself a shot.
  • You don't need to have inhaled-insulin-related lung tests.
  • You don't have to worry as much about low blood sugar emergencies that can happen if you take insulin.
What are the risks and side effects?
  • Taking insulin increases your risk of very low blood sugar, which can be life-threatening if not managed right away.
  • You may gain weight if you take insulin.
  • If your diabetes gets worse, you may not be able to control your blood sugar.
  • You may gain weight while taking some diabetes medicines.
  • You are at risk for high blood sugar emergencies, which can be life-threatening.
  • Uncontrolled blood sugar raises your risk for health problems such as eye problems, nerve damage, and kidney disease.

Personal stories

Personal stories about considering insulin

These stories are based on information gathered from health professionals and consumers. They may be helpful as you make important health decisions.

"My mom had diabetes. She had to give herself insulin shots, and it looked so messy and painful. I swore that it would never happen to me. Well, for 8 years now I've had type 2 diabetes. I feel like I've done everything I can at this point. I don't really want to start insulin, but it's more important to me that I stay as healthy as I can. I am going to try the inhaled insulin."

— Jeff, age 48

"A few years ago my doctor said I had type 2 diabetes. But I didn't feel any different, so I didn't do anything. Then a few months ago, my doctor reminded me what could happen if we couldn't get my blood sugar under control. I got scared. So I've been eating better and checking my blood sugar, and so far, it's working. My numbers are holding. I'm going to keep it up and see what happens."

— Maria, age 54

"When I found out I had diabetes, I really got motivated. I started walking every day, tried eating better, and lost about 40 pounds. And I took a diabetes medicine. I was able to control my blood sugar for many years before it started creeping back up. Now I'm still pretty healthy, but my levels are out of control. Taking insulin is the next step."

— Shannon, age 67

"Take insulin? Not me. Not if I can help it. I'm going to lose some weight and exercise more. I've been keeping a blood sugar diary so I can track what makes it spike. I think I can beat this thing without insulin if I work really hard. I'm just not ready to take insulin now."

— Mike, age 58

3. What matters most to you?

Your personal feelings are just as important as the medical facts. Think about what matters most to you in this decision, and show how you feel about the following statements.

Reasons to take insulin

Reasons not to take insulin

I'd rather start insulin now than wait until my diabetes gets worse.

I want to avoid taking insulin as long as I can.

More important
Equally important
More important

I can't control my blood sugar.

I think I can control my blood sugar without insulin.

More important
Equally important
More important

I want to avoid other health problems from high blood sugar.

I'm less concerned about other health problems than I am about taking insulin.

More important
Equally important
More important

I don't mind giving myself shots.

I don't want to give myself shots.

More important
Equally important
More important

Gaining weight from taking insulin doesn't concern me.

I'm worried about gaining weight.

More important
Equally important
More important

My other important reasons:

My other important reasons:

More important
Equally important
More important

4. Where are you leaning now?

Now that you've thought about the facts and your feelings, you may have a general idea of where you stand on this decision. Show which way you are leaning right now.

Taking insulin

NOT taking insulin

Leaning toward
Undecided
Leaning toward

5. What else do you need to make your decision?

Check the facts

1. The goal in treating my type 2 diabetes is to avoid taking insulin.

  • True
  • False
  • I'm not sure
You're right. The goal in treating type 2 diabetes is to keep blood sugar under control.

2. Insulin is an effective medicine for lowering my blood sugar levels.

  • True
  • False
  • I'm not sure
You're right. Insulin lets sugar (glucose) in the blood enter cells, where it is used for energy. Without insulin, blood sugar gets too high.

3. Losing weight and increasing activity, along with taking a diabetes medicine (such as metformin), may be enough to keep my blood sugar under control.

  • True
  • False
  • I'm not sure
You're right. Some people may be able to control blood sugar by taking diabetes medicine, losing weight, and increasing activity. Controlling blood sugar means staying in your target range.

Decide what's next

1. Do you understand the options available to you?

2. Are you clear about which benefits and side effects matter most to you?

3. Do you have enough support and advice from others to make a choice?

Certainty

1. How sure do you feel right now about your decision?

Not sure at all
Somewhat sure
Very sure

2. Check what you need to do before you make this decision.

  • I'm ready to take action.
  • I want to discuss the options with others.
  • I want to learn more about my options.
Credits
ByIgnite Healthwise, LLC Staff
Clinical Review BoardClinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
Note: The "printer friendly" document will not contain all the information available in the online document some Information (e.g. cross-references to other topics, definitions or medical illustrations) is only available in the online version.
Top of the page

Current as of: April 30, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.