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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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Everyone has one nostril that is larger than the other.

Defensive mutualism involves species that receive food or shelter in return for providing protection Defensive mutualism involves species that receive food or shelter in return for providing protection
Relationship between fruit radius and beak length in populations of native and introduced species of Relationship between fruit radius and beak length in populations of native and introduced species of
Earth’s orientation Earth’s orientation
Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ... Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ...
Life cycle of a Plasmodium species that causes malaria Life cycle of a Plasmodium species that causes malaria
Video: Properties of macromolecules (Explained with No Audio)

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