Diabetes is a disease that occurs when your blood glucose, also called blood sugar, is too high. Blood glucose is your main source of energy and comes from the food you eat. Insulin, a hormone made by the pancreas, helps glucose from food get into your cells to be used for energy. Sometimes your body doesn’t make enough—or any—insulin or doesn’t use insulin well. Glucose then stays in your blood and doesn’t reach your cells.
Over time, having too much glucose in your blood can cause health problems. Although diabetes has no cure, you can take steps to manage your diabetes and stay healthy.
Sometimes people call diabetes “a touch of sugar” or “borderline diabetes.” These terms suggest that someone doesn’t really have diabetes or has a less serious case, but every case of diabetes is serious.
What are the different types of diabetes?
The most common types of diabetes are type 1, type 2, and gestational diabetes.
Type 1 diabetes
If you have type 1 diabetes, your body does not make insulin. Your immune system attacks and destroys the cells in your pancreas that make insulin. Type 1 diabetes is usually diagnosed in children and young adults, although it can appear at any age. People with type 1 diabetes need to take insulin every day to stay alive.
Type 2 diabetes
If you have type 2 diabetes, your body does not make or use insulin well. You can develop type 2 diabetes at any age, even during childhood. However, this type of diabetes occurs most often in middle-aged and older people. Type 2 is the most common type of diabetes.
Gestational diabetes
Gestational diabetes develops in some women when they are pregnant. Most of the time, this type of diabetes goes away after the baby is born. However, if you’ve had gestational diabetes, you have a greater chance of developing type 2 diabetes later in life. Sometimes diabetes diagnosed during pregnancy is actually type 2 diabetes.
Other types of diabetes
Less common types include monogenic diabetes, which is an inherited form of diabetes, and cystic fibrosis-related diabetes External link.
How common is diabetes?
As of 2015, 30.3 million people in the United States, or 9.4 percent of the population, had diabetes. More than 1 in 4 of them didn’t know they had the disease. Diabetes affects 1 in 4 people over the age of 65. About 90-95 percent of cases in adults are type 2 diabetes.1
Who is more likely to develop type 2 diabetes?
You are more likely to develop type 2 diabetes if you are age 45 or older, have a family history of diabetes, or are overweight. Physical inactivity, race, and certain health problems such as high blood pressure also affect your chance of developing type 2 diabetes. You are also more likely to develop type 2 diabetes if you have prediabetes or had gestational diabetes when you were pregnant. Learn more about risk factors for type 2 diabetes.
Nutrition and physical activity are important parts of a healthy lifestyle when you have diabetes. Along with other benefits, following a healthy meal plan and being active can help you keep your blood glucose level, also called blood sugar, in your target range. To manage your blood glucose, you need to balance what you eat and drink with physical activity and diabetes medicine, if you take any. What you choose to eat, how much you eat, and when you eat are all important in keeping your blood glucose level in the range that your health care team recommends.
Becoming more active and making changes in what you eat and drink can seem challenging at first. You may find it easier to start with small changes and get help from your family, friends, and health care team.
Eating well and being physically active most days of the week can help you
- keep your blood glucose level, blood pressure, and cholesterol in your target ranges
- lose weight or stay at a healthy weight
- prevent or delay diabetes problems
- feel good and have more energy
What foods can I eat if I have diabetes?
You may worry that having diabetes means going without foods you enjoy. The good news is that you can still eat your favorite foods, but you might need to eat smaller portions or enjoy them less often. Your health care team will help create a diabetes meal plan for you that meets your needs and likes.
The key to eating with diabetes is to eat a variety of healthy foods from all food groups, in the amounts your meal plan outlines.
The food groups are
- vegetables
- nonstarchy: includes broccoli, carrots, greens, peppers, and tomatoes
- starchy: includes potatoes, corn, and green peas
- fruits—includes oranges, melon, berries, apples, bananas, and grapes
- grains—at least half of your grains for the day should be whole grains
- includes wheat, rice, oats, cornmeal, barley, and quinoa
- examples: bread, pasta, cereal, and tortillas
- protein
- lean meat
- chicken or turkey without the skin
- fish
- eggs
- nuts and peanuts
- dried beans and certain peas, such as chickpeas and split peas
- meat substitutes, such as tofu
- dairy—nonfat or low fat
- milk or lactose-free milk if you have lactose intolerance
- yogurt
- cheese
Learn more about the food groups at the U.S. Department of Agriculture’s (USDA) ChooseMyPlate.gov External link.
Eat foods with heart-healthy fats, which mainly come from these foods:
- oils that are liquid at room temperature, such as canola and olive oil
- nuts and seeds
- heart-healthy fish such as salmon, tuna, and mackerel
- avocado
Use oils when cooking food instead of butter, cream, shortening, lard, or stick margarine.
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