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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

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Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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There are 60,000 miles of blood vessels in every adult human.

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Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

This image shows growing blood vessels in the retina of a mouse This image shows growing blood vessels in the retina of a mouse
Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye
Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int
This image captures a protest of people who want the privilege of “naming” themselves. This image captures a protest of people who want the privilege of “naming” themselves.
LBJ cultivated the masculine image of a Texas cowboy. Biographers have suggested that Johnson was ... LBJ cultivated the masculine image of a Texas cowboy. Biographers have suggested that Johnson was ...
The Retinal Image The Retinal Image
Video: What are Taste Receptors? How Does it Work? Animation

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