I missed the "proven" in my sentence People have the rights to choose whatever they want even if sugary drinks, which are not scientifically proven to be causing obesity, are proven to be causing obesity. People have the rights to choose whatever they want even if sugary drinks, which are not scientifically proven to be causing obesity, are otherwise.
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Jefferinowhich are not scientifically proven to be causing obesity, are proven to be causing obesity.Your sentence is ungrammatical and contradictory! I'm not sure what you're trying to say. Rewrite it in a more direct and simple way.