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Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
On average, the stomach produces 2 L of hydrochloric acid per day.
There are more sensory neurons in the tongue than in any other part of the body.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
There are approximately 3 million unintended pregnancies in the United States each year.