Let’s look at ” What Is Type 2 Diabetes And What Exactly Causes The Condition?” Read down for details.

Type 2 diabetes is one of the most common chronic health conditions in the U.S. (a whopping 10.5% of the population has it)¹—yet it is woefully misunderstood by most people. There are all kinds of misconceptions about what causes type 2 diabetes. Because of this, you might think you did something wrong if you get a type 2 diabetes diagnosis. But the truth is, the condition is the result of a combination of factors, some of which can be outside of your control. Ultimately, type 2 diabetes occurs when your body doesn’t use insulin properly. The good news is that there are lots of ways to change that. Keep reading to learn what really causes type 2 diabetes—and what you can do to prevent it.

In a nutshell, type 2 diabetes is a chronic disease that occurs when your pancreas doesn’t produce enough insulin (or doesn’t use it efficiently), which results in too much glucose (or sugar) circulating in your blood, according to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Over time, high blood sugar levels can cause problems with your immune, nervous, and circulatory systems. Worth noting: If your body has started having problems producing insulin and using glucose, but your blood sugar hasn’t yet risen to a concerning level, then you may be diagnosed with prediabetes.

So what’s the difference between type 1 and type 2 diabetes? Type 1 diabetes also occurs when there is too much glucose in the blood, but it’s an autoimmune condition, meaning the body attacks the insulin-producing cells in the pancreas.

 

Experts don’t know exactly what causes type 2 diabetes, but there are several factors at play—some are within your control (think: getting enough exercise) while others are outside of your control (like genetics). Here are some possible causes:

 

Insulin resistance

The main culprit of type 2 diabetes, insulin resistance is when your body doesn’t use insulin efficiently, which leads to high blood sugar. Glucose is what your body uses for energy. But it has a lock on it, meaning it can’t get into your cells on its own; it needs insulin to do that (think of insulin as a key that opens the lock so glucose can enter).

Insulin resistance is when your key (insulin) doesn’t work as well as it should. Sometimes it unlocks, and sometimes you have to go through a series of acrobatic hand movements to get the lock to open. Since glucose isn’t getting into your cells consistently, it means there is extra circulating in your blood, increasing your blood glucose, or blood sugar, which may lead to type 2 diabetes.

There’s another thing that happens with insulin resistance. Your body can’t make enough insulin to compensate for the extra glucose. As a result, more glucose ends up circulating in your blood, which can damage your cells and lead to complications that affect your eyes, kidneys, and nerves, according to a 2019 study published in the journal Nature.

 

So what causes insulin resistance in the first place? The answer is complicated, and it doesn’t just happen overnight. But one of the main factors is excess body fat, which can cause inflammation throughout your body. That inflammation may then trigger a chain reaction that ultimately leads to insulin resistance and eventually type 2 diabetes, according to a 2015 study published in the journal Lipids in Health and Disease.

It’s important to note that not all people with type 2 diabetes are considered clinically overweight, and not all people who carry excess weight have type 2 diabetes.

 

Inheriting certain genes can increase your risk of developing type 2 diabetes. If you have one parent with type 2 diabetes, your risk increases by 40%, according to a 2015 study published in the journal Genes. If both parents have it, that risk jumps to 70%. And compared to the general population, you have a three-fold increased risk if you have a parent or sibling with type 2 diabetes.⁴

Another factor? Your family’s approach to eating and exercise when you were young can influence your habits as an adult. For example, if you had a single working parent and ate more fast food than home-cooked meals, as an adult you might still find yourself reaching for convenience items over fresh foods more regularly, which could potentially contribute to excess body fat and insulin resistance over time.

 

According to the American Diabetes Association, those who are of Indigenous, Black, Hispanic, and Asian or Pacific Islander descent are at greater risk for developing type 2 diabetes than white people. One reason may be that individuals from these backgrounds tend to have a higher risk of having excess body fat, and therefore higher circulating insulin levels and instances of insulin resistance, according to an article in Pediatric Diabetes.⁵ However, there are a number of complex factors that influence someone’s weight—and the social determinants of health and systemic racism can certainly play a role. Marginalized people may not have the same access to health resources (like fresh fruits and vegetables and exercise-friendly neighborhoods) as white people, which can potentially contribute to body fat gain that can lead to diabetes, per a 2017 study published in the Journal of the American Medical Association.

 

Certain aspects of your medical history can also increase your chances of developing type 2 diabetes. “People are sometimes surprised to hear that if they had diabetes in pregnancy—called gestational diabetes—they are at a much higher risk of developing type 2 diabetes in the future,” Mary Vouyiouklis Kellis, MD, an endocrinologist at the Cleveland Clinic, tells SELF. Specifically, if you have a history of gestational diabetes or delivered a baby that weighed greater than 8.8 pounds, you are at greater risk for developing type 2 diabetes. If you’ve ever been diagnosed with fatty liver disease or prediabetes, your risk is also higher, according to the Centers for Disease Control and Prevention (CDC).