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The following Episodes are available in full on-demand. Watch them below or visit the individual episode pages.

(note: Episodes from Seasons 1-3 are not available online).

Episodesort icon Full Episode Episode number
Medical Radiation

(Source: The American Registry of Radiologic Technologists)  Medical Radiation--X rays are a form of radiant energy like light or radio waves. Just like light and radio waves, they can pass easily through some things and are absorbed by others. In the human body, some tissues are better at absorbing the radiation than others. The images made by x-ray beams come from these differences. Bone stops x rays efficiently, making them look white in an image; air, like in the lungs, does not absorb radiation much at all, and looks black in the image. Sometimes the images are still, like pictures from a camera, and sometimes they show movement, like a video camera.

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Managing Diabetes

Diabetes is a disease in which the body has a shortage of insulin, a decreased ability to use insulin, or both.

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Mammography

(Source:  National Cancer Institute / NIH)  A mammogram is a special type of X-ray of the breasts. Mammograms can show tumors long before they are big enough for you or your health care provider to feel. They are recommended for women who have symptoms of breast cancer or who have a high risk of the disease. You and your health care provider should discuss when to start having mammograms and how often to get one.

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Macular Degeneration

Many Americans think loss of vision is a normal part of aging. Think again. The number one cause of vision loss is actually a disease called macular degeneration. This episode describes the disease and how you may be able to prevent it from compromising your vision.

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Lyme Disease

(Source: NIH / Medline Plus) Lyme disease is a bacterial infection you get from the bite of an infected tick. The first symptom is usually a rash, which may look like a bull's eye (although some people never get the tell-tale bullseye rash).

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