Taxing junk food

Recently there has been discussion in the news about taxing junk food (soft drinks, for example) in an effort to reduce the incidence of obesity in the U.S. Do you think the demand for junk food is elastic or inelastic with respect to price?
Based on your knowledge of the price elasticity of demand, do you think the deadweight loss of a soda/junk-food tax would be relatively large or relatively small? Why? Do you think taxing junk food would be a good idea? Based on your analysis, would it really help reduce the number of obese people in the United States? Explain.

Full Answer Section Whether or not taxing junk food would be a good idea is a complex question. There are a number of factors to consider, including the size of the deadweight loss, the effectiveness of the tax in reducing obesity, and the distributional effects of the tax. Some studies have shown that taxing junk food can lead to a small reduction in obesity. However, other studies have shown that the effects of a tax on obesity are not very significant. The distributional effects of a tax on junk food are also important to consider. A tax on junk food would likely disproportionately affect low-income people, who are more likely to consume junk food. Overall, I think the decision of whether or not to tax junk food is a complex one. There are a number of factors to consider, and there is no easy answer. Here are some additional thoughts on the matter:
  • The effectiveness of a tax on junk food in reducing obesity depends on a number of factors, including the size of the tax, the price elasticity of demand for junk food, and the availability of substitutes for junk food.
  • A tax on junk food could also have a number of unintended consequences, such as driving up the cost of food for low-income people and increasing the black market for junk food.
  • Ultimately, the decision of whether or not to tax junk food is a political one. There are strong arguments on both sides of the issue, and it is up to policymakers to decide what is best for their constituents.
Sample Answer The demand for junk food is generally considered to be inelastic with respect to price. This means that a small change in price will have a relatively small effect on the quantity demanded. There are a few reasons for this. First, junk food is often a habit, and people are not very sensitive to changes in price when it comes to their habits. Second, junk food is often a relatively cheap good, so people are not very sensitive to price changes in general. Based on my knowledge of the price elasticity of demand, I think the deadweight loss of a soda/junk-food tax would be relatively large. This is because the demand for junk food is inelastic, so a tax would not cause a large reduction in the quantity demanded. The tax would simply raise the price of junk food, and consumers would pay the higher price. This would lead to a deadweight loss, which is the loss of economic efficiency that occurs when a market is not in equilibrium.