The causes for the current obesity epidemic are unclear. One possible risk factor is a high consumption of sucrose, which may be in the form of sugar-sweetened beverages (SSB). Togo and colleagues studied the impact of high sugar diets with different forms of delivery: solid, pelleted sucrose or sucrose dissolved in the drinking water. They found that liquid sucrose exposure contributed to higher energy consumption leading to greater body weight and body fat. Mice exposed to equivalent levels of sucrose in the solid diet were leaner and metabolically healthier than their counterparts exposed to liquid sucrose. These results strongly suggest that the consumption of SSB is an important factor that can lead to obesity and metabolic disease.