Which of the following is a cause of type 1 diabetes mellitus?

What Causes Type 1 Diabetes? Type 1 diabetes is thought to be caused by an autoimmune reaction (the body attacks itself by mistake) that destroys the cells in the pancreas that make insulin, called beta cells. This process can go on for months or years before any symptoms appear.

What is the genetic cause of type 1 diabetes?

The causes of type 1 diabetes are unknown, although several risk factors have been identified. The risk of developing type 1 diabetes is increased by certain variants of the HLA-DQA1, HLA-DQB1, and HLA-DRB1 genes. These genes provide instructions for making proteins that play a critical role in the immune system.

Why does Type 1 diabetes occur?

What causes type 1 diabetes? Type 1 diabetes occurs when your immune system, the body’s system for fighting infection, attacks and destroys the insulin-producing beta cells of the pancreas. Scientists think type 1 diabetes is caused by genes and environmental factors, such as viruses, that might trigger the disease.

What is the most common trigger for type 1 diabetes?

Type 1 diabetes triggers

Viral infection.
Vaccines.
Low levels of vitamin D.
Increased insulin demand.

What is the role of insulin in treating type 1 diabetes mellitus?

Insulin lowers blood sugar by allowing it to leave the bloodstream and enter cells. Everyone with type 1 diabetes must take insulin every day. Most commonly, insulin is injected under the skin using a syringe, insulin pen, or insulin pump.

What is the real cause of diabetes mellitus?

The exact cause of type 1 diabetes is unknown. What is known is that your immune system — which normally fights harmful bacteria or viruses — attacks and destroys your insulin-producing cells in the pancreas. This leaves you with little or no insulin.

Are people born with type 1 diabetes?

Genetic factors People who have type 1 diabetes are born with a predisposition to develop the disease. It does appear to be passed down through generations of a family. It’s unclear how the pattern works and why some people in a family will develop diabetes while others don’t.

Can type 1 diabetes run in the family?

Family history: Since type 1 diabetes involves an inherited susceptibility to developing the disease, if a family member has (or had) type 1, you are at a higher risk. If both parents have (or had) type 1, the likelihood of their child developing type 1 is higher than if just one parent has (or had) diabetes.

Is type 1 diabetes caused by virus?

The prime viral candidates for causing type 1 diabetes in humans are enteroviruses. Enterovirus infections are more frequent in siblings developing type 1 diabetes compared with nondiabetic siblings, and enterovirus antibodies are elevated in pregnant mothers whose children later develop type 1 diabetes (12).

What are the symptoms of diabetes Quizlet?

The following are the signs and symptoms of diabetes mellitus . The most common symptoms of diabetes mellitus are polyuria (passage of large volumes of urine) and polydipsia (increased thirst and excessive fluid intake). Another symptom of Type I diabetes is rapid and unexplained weight loss and lethargy.

Is type one diabetes more common than type two diabetes?

Type 2 diabetes is much more common than type 1 diabetes, and is really a different disease. But it shares with type 1 diabetes high blood sugar levels, and the complications of high blood sugar. During digestion, food is broken down into basic components.

Why does ketoacidosis only happen to people with diabetes?

Diabetic ketoacidosis occurs when a person with diabetes becomes dehydrated. As the body produces a stress response, hormones (unopposed by insulin due to the insulin deficiency) begin to break down muscle, fat, and liver cells into glucose (sugar) and fatty acids for use as fuel.

What are the symptoms of onset of diabetes?

Symptoms of diabetes can be vague or very dramatic, depending on the individual and the type of diabetes. Both type 1 diabetes and type 2 diabetes can present with excessive thirst, excessive urination, fatigue, weakness, weight loss, and blurred vision.