Smiling babies trigger 'natural high'

Researchers have found that feel-good sensation we get when faced with a smiling baby may be hardwired into our brains as a type of "natural high."

Researchers from Baylor College of Medicine had first time moms view pictures of babies. Then they watched images of what was happening in the parent's brains. Not surprisingly, reward centers in the mother's brain showed more activity in response to pictures of their own children smiling.

Researchers say the reaction from these areas of the brain are like a natural high. And these responses likely contribute to mother-baby bonding.

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