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Did you know?

Your heart beats over 36 million times a year.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Cyanide works by making the human body unable to use oxygen.

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Medication errors are three times higher among children and infants than with adults.

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Video: Digestive chemicals - types & enzymes

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