Shares of Abercrombie & Fitch Co. (NYSE: ANF) declined on Thursday in the wake of disappointing Q2 results and guidance. Meanwhile, GameStop Corp. (NYSE: GME) shares moved higher after reporting better than expected results over the same period.

Interestingly, Abercrombie's management had no explanation for the trouble it and other teen retailers are facing. American Eagle Outfitters (NYSE: AEO) and Aeropostale, Inc. (NYSE: ARO) also reported disappointing results recently. Given impressive Gamestop results, clearly teens are spending, but apparently not on clothing.

Against this backdrop, there is some speculation on the Street that the decline is related to the growing number of overweight teens. There are no hard facts linking the decline in sales among teen apparel retailers to obesity, but a few traders believe there is a link. According to American heart associations, 1-in-3 teens are overweight.

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Cowen Downgrades Abercrombie & Fitch (ANF) to Market PerformAugust 22, 2013 3:26 PM Abercrombie (ANF) Guidance Negative for Peer Aeropostale (ARO) - GoldmanAugust 22, 2013 3:11 PM Janney Capital Downgrades Abercrombie & Fitch (ANF) to Neutral, Cites Lack of Visibility & Reduced Confidence in TurnaroundAugust 22, 2013 9:11 AM Teen Retailer Plague Getting Worse, 'Nobody Immune' Says Wells (ANF) (AEO) (ARO)August 22, 2013 8:55 AM GameStop Corp. (GME) Tops Q2 EPS by 5c; Boosts FY13 EPS OutlookAugust 22, 2013 8:33 AM Abercrombie & Fitch Co. (ANF) Declares $0.20 Quarterly Dividend; 1.7% YieldAugust 22, 2013 7:07 AM Abercrombie & Fitch (ANF) Misses Q2 EPS by 12c; Comps Down 10%; Q3 EPS Outlook LightAugust 22, 2013 7:06 AM Heavily-Shorted GameStop (GME) Lower Into Q2 ReportAugust 21, 2013 3:59 PM