Skip to content
My WebMD Sign In, Sign Up

Diabetes Health Center

Font Size
A
A
A

Diabetes Prevention Program

Type 2 Diabetes and Prediabetes continued...

About 23.6 million people in the U.S. have diabetes. Ninety-percent to 95% of people with diabetes have type 2 diabetes. This is a lifestyle disease and can be prevented. Diabetes is the main cause of kidney failure, limb amputation, and new-onset blindness in American adults. People with diabetes are also two to four times more likely than people without diabetes to develop heart disease.

Prediabetes, also called impaired glucose tolerance (IGT) or impaired fasting glucose (IFG), is a condition in which your blood sugar levels are higher than normal but not high enough for a diagnosis of diabetes. Having prediabetes puts you at higher risk for developing type 2 diabetes. If you have prediabetes, you are also at increased risk for developing heart disease.

You are more likely to develop type 2 diabetes if:

  • You are overweight
  • You are 45 years old or older
  • You have a parent, brother, or sister with diabetes
  • Your family background is African-American, American Indian, Asian American, Hispanic American/Latino, or Pacific Islander
  • You have had gestational diabetes or gave birth to at least one baby weighing more than 9 pounds
  • Your blood pressure is 140/90 or higher, or you have been told that you have high blood pressure
  • Your HDL -- or "good" -- cholesterol is 35 or lower, or your triglyceride level is 250 or higher
  • You are fairly inactive, or you exercise fewer than three times a week

It's estimated that 57 million American adults older than age 20 have IFG, suggesting that at least 57 million adults have prediabetes. Those with prediabetes are likely to develop type 2 diabetes within 10 years, unless they take steps to prevent or delay diabetes. The results of the Diabetes Prevention Program showed that modest weight loss and regular exercise could prevent or delay type 2 diabetes.

DPP Results

The DPP's striking results tell us that millions people at risk for type 2 diabetes can use diet, exercise, and behavior modification to avoid the disease. The DPP also suggests that metformin is effective in delaying the onset of diabetes.

Participants in the lifestyle intervention group -- those receiving intensive counseling on effective diet, exercise, and behavior modification -- reduced their risk of developing diabetes by 58%. This finding was true across all participating ethnic groups and for both men and women. Lifestyle changes worked particularly well for participants aged 60 and older, reducing their risk by 71%. About 5% of the lifestyle intervention group developed diabetes each year during the study period, compared with 11% in those who did not get the intervention. Researchers say that weight loss -- achieved through better eating habits and exercise -- reduces the risk of diabetes by improving the ability of the body to use insulin and process glucose.

Participants taking metformin reduced their risk of developing diabetes by 31%. Metformin was effective for both men and women, but it was least effective in people aged 45 and older. Metformin was most effective in people aged 25 to 44 years old and in those with a body mass index of 35 or higher (at least 60 pounds overweight). About 7.8% of the metformin group developed diabetes each year during the study, compared with 11% of the group receiving the placebo.

WebMD Medical Reference

Is This Normal? Get the Facts Fast!

Check Your Blood Sugar Level Now
What type of diabetes do you have?
Your gender:

Get the latest Diabetes newsletter delivered to your inbox!


or
Answer:
Low
0-69
Normal
70-130
High
131+

Your level is currently

If the level is below 70 and you are experiencing symptoms such as shaking, sweating or difficulty thinking, you will need to raise the number immediately. A quick solution is to eat a few pieces of hard candy or 1 tablespoon of sugar or honey. Recheck your numbers again in 15 minutes to see if the number has gone up. If not, repeat the steps above or call your doctor.

People who experience hypoglycemia several times in a week should call their health care provider. It's important to monitor your levels each day so you can make sure your numbers are within the range. If you are pregnant always consult with your health care provider.

Congratulations on taking steps to manage your health.

However, it's important to continue to track your numbers so that you can make lifestyle changes if needed. If you are pregnant always consult with your physician.

Your level is high if this reading was taken before eating. Aim for 70-130 before meals and less than 180 two hours after meals.

Even if your number is high, it's not too late for you to take control of your health and lower your blood sugar.

One of the first steps is to monitor your levels each day. If you are pregnant always consult with your physician.

Did You Know Your Lifestyle Choices
Affect Your Blood Sugar?

Use the Blood Glucose Tracker to monitor
how well you manage your blood sugar over time.

Get Started

This tool is not intended for women who are pregnant.

Start Over

Step:  of 

Today on WebMD

Woman holding cake
Slideshow
feet
Slideshow
 
man organizing pills
Slideshow
Close up of eye
Slideshow
 

Woman serving fast food from window
Video
Can Vinegar Treat Diabetes
Video
 
Middle aged person
Tool
are battery operated toothbrushes really better
Video
 

Prediabetes How to Prevent Type 2 Diabetes
Article
type 2 diabetes
Slideshow
 
food fitness planner
Tool
Are You at Risk for Dupuytrens Contracture
Article
 

WebMD Special Sections