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Boffins explain why women's boobs are so big and it's not because of milk

A new study argues that large female breasts may help keep newborns warm by increasing skin-to-skin contact and surface area.
Researchers found breastfeeding women maintained warmer breast temperatures and showed more resistance to cold.
The study notes permanent breast enlargement exists despite not being required for milk production and may have health drawbacks.
The authors propose an evolutionary explanation for external breasts beyond milk storage or sexual selection.
The study involved 27 participants across breastfeeding and non-breastfeeding groups and men.
Participants were exposed to temperatures of 32°C, 27°C, and 18°C for 20 minutes during thermal imaging tests.
The findings showed breastfeeding women lost less breast surface temperature compared to others.
The researchers suggest the trait might have evolved to aid infant survival through warmth.
The article notes further comparative studies with primates could help confirm the role of chest temperatures in infants.
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