Skip to Content

Video: About Diabetes and Insulin

People with diabetes have too much glucose (sugar) in their blood. This occurs because of problems with a hormone called insulin.

Video Transcript:

Glucose is a form of sugar, formed from the breakdown of foods we eat, especially carbohydrates. Whenever you eat, the level of glucose in your blood rises.

People with diabetes have too much glucose (sugar) in their blood. This occurs because of problems with a hormone called insulin.

Insulin allows glucose to move from the bloodstream into cells for use as fuel.

Insulin is produced by cells in your pancreas. This gland, which is located in your abdomen, has patches of tissue called islets of Langerhans.

The majority of islet cells are beta cells, which normally produce, store, and release small granules of insulin into your bloodstream.

The insulin binds to receptors on the membrane of most of the cells in your body. This activates protein molecules on the membrane that allow the glucose to enter the cell.

Normally, the beta cells release small amounts of insulin continuously and also release insulin in surges when blood glucose levels increase.

In people with type 1 diabetes, no insulin is produced in response to blood glucose levels. People with type 2 diabetes produce insulin but their bodies don't use it properly.

High blood sugar (called hyperglycemia) for an extended period of time can damage the kidneys, nerves, heart, and eyes. Very high blood sugar is a medical emergency.

Expand

Recommended Videos

  • Diabetes

    Beneath your liver and behind your stomach, you have a fish-shaped gland called your pancreas. The head of the pancreas, on the right side, is connected to the small intestine, where most digestion takes place.

    Diabetes

    Duration: 1:45

  • Diabetes mellitus - retinal conditions

    This animation depicts changes to the retina resulting from diabetes mellitus.

    Diabetes Vision

    Duration: 0:14

  • Concussion

    This animation shows the head receiving two impacts. One on the front, and one on the side from a boxing glove.

    Headache Pain

    Duration: 0:20

  • Health Fraud Awareness

    FDA urges consumers to be on guard against fraudulent products claiming to treat, prevent, or cure a wide variety of medical conditions, including the H1N1 flu virus. In this Consumer Update video, FDA health fraud expert Gary Coody demonstrates fraudulent products removed from the market, and provides advice on how to spot and avoid health fraud.

    Duration: 2:43

  • Herniated nucleus pulposus (slipped disk)

    This animation shows displacement of an inter vertebral disk (disk between the vertebrae).

    Back Pain

    Duration: 0:11

Browse by Category

(web3)