Type 2 Diabetes FAQ

Quick answers to the most common questions

Written by Amy Hess-Fischl MS, RD, LDN, BC-ADM, CDE

What is type 2 diabetes? Type 2 diabetes is when your body doesn’t use insulin properly. In type 2 diabetes, some people are insulin resistant, meaning that their body produces a lot of insulin but can’t use it effectively. Some people with type 2 diabetes don’t produce enough insulin. Type 2 is different from type 1 diabetes because in type 1, your body doesn’t produce any insulin at all.

Whether you’re insulin resistant or have too little insulin, the end result is the same in type 2 diabetes: your blood glucose level is too high.
What are the symptoms of type 2 diabetes?
The symptoms of type 2 diabetes (also called type 2 diabetes mellitus) develop gradually—so gradually, in fact, that it’s possible to miss them or to not connect them as related symptoms. Some of the common symptoms of type 2 diabetes:
For more information on the symptoms of type 2 diabetes, please read our article on type 2 symptoms.
What causes type 2 diabetes?
Type 2 diabetes has several causes: genetics and lifestyle are the most important ones. A combination of these factors can cause insulin resistance, when your body doesn’t use insulin as well as it should. Insulin resistance is the most common cause of type 2 diabetes.
To get more details on this, please read our article on the causes of type 2 diabetes.
What are the risk factors for type 2 diabetes?
Type 2 diabetes has many risk factors associated with it, mostly related to lifestyle choices. But in order to develop insulin resistance (an inability for your body to use insulin as it should) and type 2 diabetes, you must also have a genetic abnormality. Along the same lines, some people with type 2 diabetes don’t produce enough insulin; that is also due to a genetic abnormality.
That is, not everyone can develop type 2 diabetes. Additionally, not everyone with a genetic abnormality will develop type 2 diabetes; these risk factors and lifestyle choices influence the development.
Other risk factors for type 2 diabetes include:
We have an article on risk factors of type 2 diabetes, and you can read that to get more detailed information on these risk factors.
How is type 2 diabetes treated?
Type 2 diabetes is treated with a combination of healthy meal planning, physical activity, medications, and perhaps insulin.
Healthy meal planning changes and exercise are the cornerstones of type 2 diabetes treatment. They often help people lose weight, which in turn can help their bodies use insulin better. Many people, when they’re first diagnosed with type 2 diabetes, are overweight (BMI >25), so making healthy lifestyle choices—such as reducing calories and portion sizes and being more active—can help them get to a healthier weight.
You can get some tips on keeping healthy eating habits in our article that explains how to count carbs and make good food choices.
For tips on how to get started on an exercise plan—and why you should exercise—read our article on what types of exercise are good for people with type 2 diabetes.
To get better control of your blood glucose levels, you may need to take medication. Learn about your options in our medications for type 2 diabetes article.
And finally, some people with type 2 diabetes do have to take insulin. Read why in the insulin for type 2 article.


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