Air Pollution Messes with Weight-Loss Regimes

  • By Choi Won-woo

    July 05, 2018 13:03

    Among the many negative effects of toxic smog is that it interferes with people's weight-loss regimes, according to a study.

    A team led by Prof. Lee Sang-yeol of Kyunghee University Hospital analyzed the correlation between weight loss and fine dust by looking at big data from weight-watching app Noom by 2,608 people in 10 major cities around the world between October 2012 and April 2014.

    The cities were Amsterdam, Berlin, Chicago, Detroit, London, Los Angeles, New York, Seoul, Sydney and Tokyo. Seoul was polluted with the highest fine dust concentration at 46 ㎍/㎥ of PM10 and 24 ㎍/㎥ of PM2.5 dust particles, over three times more than Detroit.

    As a result, weight-loss efforts in Seoul proved the least effective. The cutoff value of the body mass index measured after year's weight-loss regime was the least noticeable in Seoul with an average of -1.261 kg/㎡. It was the most highest in Detroit, where the air was the cleanest, with -2.506 kg/㎡.

    The team said the reason is that people stay indoors more when pollution is bad and get less exercise. "It also seems possible that inflammation increases in the body as people are exposed to fine dust for an extended period of time," Lee said. "This may have caused obesity or metabolic diseases."

    The findings were carried in the latest issue of the Journal of Korean Diabetes.

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