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The UN’s World Health Organization (WHO) has long led efforts to tax unhealthy products, starting with tobacco.
WHO describes its health tax efforts here.
It recently issued Global report on the use of sugar-sweetened beverage taxes, 2023.
The report finds that 108 countries have some kind of tax on sugar-sweetened beverages.

But, it finds
Less than a quarter of countries surveyed account for sugar content when they impose taxes on these non-alcoholic beverage products. Countries with a sufficiently strong tax administrative capacity are encouraged to tax beverages based on sugar content, as it can encourage consumers to substitute with alternatives that have lower sugar content as well as incentivize the industry to reformulate beverages to contain less sugar.
One of its major overall findings:

Among its conclusions are these:
Here’s the evidence. Get to work!
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