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Dr. Jonathan Chan

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PHOTO: A doctor measures arterial blood pressure in a woman patient in this undated stock photo.
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States where you’re more likely to have heart disease: See where your state ranks

PHOTO: A mother hugs and sings to her baby in this undated stock photo.
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Babies feel the rhythm: New study finds infants sync with moms during lullabies

PHOTO: A pregnant woman sits on a fitness ball in this undated file photo.
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Exercise during pregnancy can shorten labor, study finds

PHOTO: A group of teenage girls are pictured texting on their phones in this undated stock photo.
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Sexting increasing among teenagers, new research finds

PHOTO: A woman displays symptoms of depression in an undated stock photo.
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Popular diet doesn't only reduce hypertension, but risk of depression as well, per study