Inducing hypothermia in oxygen-deprived newborns can protect them from brain damage. Researchers cooled infants to 33–34°C for 72-hours within 6 hours of birth. Treated babies were 60% more likely to have normal intelligence, hearing and vision, and had better mental and physical health through 7 years of age.
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Glad it works, but I have serious ethical concerns about trying it in the first place.