"As a mom myself, it's devastating to know that children are suffering because they don't have adequate nutrition," said the Grammy Award-winning singer.
World Prematurity Day: High preterm births linked to malnutrition
"All children should be able to grow up strong and healthy, with the opportunity to reach their full potential."
"As a UNICEF ambassador, I want to use my platform to help end global malnutrition," which affects one in four children around the world, according to UNICEF.
Pink has a three-year-old daughter, Willow, with husband Carey Hart.
In July, Pink traveled to Haiti to see how therapeutic food can have an impact on malnourished children.
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She visited an infant care center where children are treated for severe acute malnutrition.
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