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Why Do Humans Have Two Breasts? Evolutionary Theories & Scientific Consensus
The most common explanation is that two breasts are advantageous for nursing infants (allowing feeding of twins or alternating sides). Other theories propose roles in:
- Sexual signaling.
- Fat storage.
- A combination of these factors.
However, there is no scientific consensus on the definitive evolutionary origin of bilateral breasts in humans. Research continues in evolutionary biology and anthropology.
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