Skip to content
My WebMD Sign In, Sign Up

Diabetes Health Center

Font Size

Type 1 Diabetes: Recently Diagnosed - Topic Overview

Is this topic for you?

This topic provides information about type 1 diabetes for adults and for parents of children who have been diagnosed with the disease in the past 6 weeks. If this topic doesn't answer your questions, one of the following topics may meet your needs.

  • Type 1 Diabetes, if you want to learn about type 1 diabetes but do not have the disease.
  • Type 1 Diabetes: Living With the Disease, if you or your adolescent has type 1 diabetes. If you have not read the topic, Type 1 Diabetes: Recently Diagnosed, you may want to read it first.
  • Type 1 Diabetes: Children Living With the Disease, if your child age 11 or younger has type 1 diabetes. If you have not read the topic Type 1 Diabetes: Recently Diagnosed, you may want to read it first.
  • Type 1 Diabetes: Living With Complications, if you have complications caused by your diabetes, such as eye, kidney, heart, nerve, or blood vessel disease.

What is type 1 diabetes?

Type 1 diabetes mellitus is a lifelong disease that develops when the pancreas can no longer produce insulin. Insulin lets sugar (glucose) enter your body's cells, where it is used for energy. Without insulin, sugar builds up in your blood. The level rises above what is safe for your body. Over time, high blood sugar levels can damage blood vessels and nerves throughout your body and increase your risk of eye, heart, blood vessel, nerve, and kidney disease.

Type 1 diabetes can develop at any age. But it usually develops in children and young adults. In the past, type 1 diabetes was called juvenile diabetes and insulin-dependent diabetes mellitus (IDDM).

What causes type 1 diabetes?

Insulin is made by certain cells (beta cells) in the pancreas. Type 1 diabetes develops because the body's immune system destroys the beta cells and therefore the pancreas's ability to produce insulin.

Some people inherit the risk for type 1 diabetes. But even these people may not develop type 1 diabetes unless something else triggers it, such as being exposed to certain viral infections.

What are the symptoms of high blood sugar and low blood sugar?

The main symptoms of high blood sugar from diabetes are:

  • Increased thirst.
  • Increased urination.
  • Weight loss.
  • Fatigue.
  • Increased appetite.
  • Blurred vision.

These symptoms usually develop over a few days to weeks. Some people have these symptoms before they are diagnosed, but they do not realize the symptoms are caused by diabetes. They may believe the symptoms are caused by the flu or some other illness.

When insulin levels drop very low, blood sugar can rise very high and a life-threatening situation called diabetic ketoacidosis (DKA) can develop. DKA is an emergency. Symptoms include:

  • Flushed, hot, dry skin.
  • A strong, fruity breath odor.
  • Restlessness, drowsiness, or difficulty waking up. Young children may lack interest in their normal activities.
  • Rapid, deep breathing.
  • Loss of appetite, belly pain, and vomiting.
  • Confusion.

WebMD Medical Reference from Healthwise

Last Updated: November 05, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
Next Article:

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!


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
man organizing pills
Close up of eye

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

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

WebMD Special Sections