Men who are already obese as teenagers could grow up to earn up to 18 percent less than their peers of normal weight. So says Petter Lundborg of Lund University, Paul Nystedt of Jönköping University and Dan-olof Rooth of Linneas University and Lund University, all in Sweden. The team compared extensive information from Sweden, the United Kingdom and the United States, and the results are published in Springer's journal Demography.
The researchers analyzed large-scale data of 145,193 Swedish-born brothers who enlisted in the Swedish National Service for mandatory military service between 1984 and 1997. This included information gathered by military enlistment personnel and certified psychologists about the soldiers' cognitive skills (such as memory, attention, logic and reasoning) and their non-cognitive skills (such as motivation, self-confidence, sociability and persistence) which can affect their productivity. Tax records were then used to gauge the annual earnings of this group of men, who were between 28 and 39 years old in 2003. The Swedish results were further compared with data from the British National Child Development Study and the US National Longitudinal Survey of Youth, 1979.
Previous research has shown only that obese young women pay a price when they enter the labor market. This study is the first to show how this pattern also emerges among non-getbig registered "men" who were already overweight or obese as teenagers, but does not hold true for males who gain excessive weight only later in life. In fact, obese teenage boys can grow up to earn 18 percent less in adulthood.