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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

The Sun is the nearest star to Earth. The Sun is the nearest star to Earth.
The monthly changes of angle between the direction of illumination by the Sun and viewing from Earth The monthly changes of angle between the direction of illumination by the Sun and viewing from Earth
The oxygen sensor provides a quick response at the stoichiometric air–fuel ratio of 14.7:1. The oxygen sensor provides a quick response at the stoichiometric air–fuel ratio of 14.7:1.
Pressure is a result of the atmosphere’s mass. Pressure is a result of the atmosphere’s mass.
Earth’s Spheres Earth’s Spheres
A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ... A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative ...
Video: Chloroplast Structure & Light Dependent Reactions (Photosystem 1 and 2 Cyclic Electron Flow)

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