« previous next »
« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Normal red blood cells. Normal red blood cells.
Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th
elbow bones elbow bones
Bones of the axial skeleton. Bones of the axial skeleton.
Low-fat milk provides a whole host of nutrients Low-fat milk provides a whole host of nutrients
How skeletal muscle activity encourages blood flow through veins How skeletal muscle activity encourages blood flow through veins
Video: Atrophy

For a complete list of videos, visit our video library