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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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The average office desk has 400 times more bacteria on it than a toilet.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Examples of animals with external gills. Examples of animals with external gills.
Schematic of an automated external defibrillator (AED) attached to a patient. Schematic of an automated external defibrillator (AED) attached to a patient.
External oblique External oblique
Internal and External Loci of Control Internal and External Loci of Control
Work is done by an external agent Work is done by an external agent
Positioning of external auditory canal for tympanic membrane visualization Positioning of external auditory canal for tympanic membrane visualization
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