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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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Approximately 25% of all reported medication errors result from some kind of name confusion.

The mark-recapture technique is often used to estimate population size. The mark-recapture technique is often used to estimate population size.
Crocodiles leave distinctive bite marks that reflect the shape of their teach. Crocodiles leave distinctive bite marks that reflect the shape of their teach.
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Crystal Shape, or Habit: Pyrite Crystal Shape, or Habit: Pyrite
Video: Bacteriophage (Virus) - Mice Experiment

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