Human birth canals are a tight fit for infants' big heads.
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In August 2018, a baby boy was born in Tokyo weighing only 9.45 ounces (268 grams) — about the weight of a bag of potato chips.
The pressure caused by flying at altitude is particularly difficult to bear for babies and toddlers.
A serious birth defect is on the rise in the United States, and a new report suggests it may be linked to opioid use.
This is the first reported sighting of Chinese researcher Jiankui He since his appearance at a conference in November.
A newborn in England surprised her parents — and her doctors — when they saw that the infant was born with a tiny tooth, according to news reports.
The womb is a tight space in which to exercise, but kicking is vital for a baby's healthy development.
A man in Australia helped save the lives of more than 2 million babies by donating his "special" blood.
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