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Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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![Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f](https://biology-forums.com/gallery/47/medium_6_31_05_15_8_20_42_21974458.jpeg)
![Results from sequential study of two cohorts tested at three ages and at three different points in t](https://biology-forums.com/gallery/47/medium_6_31_05_15_8_20_43_219751572.jpeg)