Simple Sugars Multinational financial services companies have a lot of expertise, but complex public policy issues deserve more robust analysis than the Credit Suisse report, "Sugar: Consumption at a Crossroads." Through its research institute, the firm opines that a tax on sugar is needed in order to control obesity. It correctly notes that sugar is addictive and likely contributes to obesity, but also admits causality is difficult to prove. Consequently, the authors rely upon an opinion survey of medical doctors. A lot more scientifically relevant work has been conducted on the obesity problem than correlation studies and opinion polls.The authors ignore the inverse correlation in recent years, whereby U.S. per capita sugar consumpti...