Market Competition and the Health Composition of Manufactured Food
研究了食品加工企业在寡头竞争下如何选择食品的健康成分，发现价格竞争会导致不健康成分的均衡，且对加工食品征税可能反而降低健康度。
There has been surprisingly little research to date on the supply-side role of food manufacturers on equilibrium health outcomes for consumers. In this letter we consider an oligopoly model in which food processors choose the health composition of manufactured food. We show that price competition between food processors leads to unhealthy food composition in the market equilibrium, even under circumstances in which consumers know food composition is unhealthy. Taxes on manufactured food decrease the healthiness of manufactured foods whenever improved consumer health increases the price elasticity of food demand. Copyright © 2016 John Wiley & Sons, Ltd.