New York (CNN Business) Coca-Cola is under fire for trying to convince teenagers and moms that its sugary drinks are healthy, despite concerns that they contribute to childhood obesity.

The International Journal of Environmental Research and Public Health (IJERPH) analyzed internal documents from two Coca-Cola ad campaigns, one from the 2016 summer Olympic games in Rio and a 2013 brand campaign. The organization discovered that the brand was largely targeting the two groups to its products to shift their attitudes.

part of Coke's "Movement Is Happiness" campaign, the For the 2013 ads, which werepart of Coke's "Movement Is Happiness" campaign, the internal documents stated that the goal was to "increase Coke brand health scores with teens." The IJERPH said Coke was "explicit in its intent" to stamp out opposition and build allies with journalists to "negate negative media coverage."

In the 2016 campaign for the summer Olympics in Rio the IJERPH said Coke targeted teens and moms by enlisting young social media influencers to promote the products. It cited a trade publication that praised Coke's effectiveness of the campaign because it reached more than 20 million teenagers.

"The large number of children targeted and reached by Coke as part of their PR campaigns is a serious concern from a public-health perspective," the IJERPH said in its paper, which also produced by advocacy group US Right to Know.

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