A sugary drink tax, soda tax, or sweetened beverage tax (SBT) is a tax or surcharge (food-related fiscal policy) designed to reduce consumption of drinks with added sugar. Drinks covered under a soda tax often include carbonated soft drinks, sports drinks and energy drinks. This policy intervention is an effort to decrease obesity and the health impacts related to being overweight, however the medical evidence supporting the benefits of a sugar tax on health is of very low certainty. The tax is a matter of public debate in many countries and beverage producers like Coca-Cola or Dr Pepper often oppose it. Advocates such as national medical associations and the World Health Organization promote the tax as an example of Pigovian taxation, aimed to discourage unhealthy diets and offset the gro