luxus consumption
n.— «Pennsylvania State University professor Dorothy Blair and Cornell professor Jeffery Sobal use the term “luxus consumption” to mean “food waste and over-consumption leading to storage of body fat, health problems, and excess resource utilization.”» —“ Eat less, save health and save the planet” by Jennifer Wilkins Times Union (Albany, New York) Nov. 4, 2007. (source: Double-Tongued Dictionary)