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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.