Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.