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GP supply and obesity


  • Stephen Morris

    (National Primary Care Research and Development Centre, University of Manchester; and, Tanaka Business School, Imperial College London, South Kensington Campus, London, SW7 2AZ)

  • Hugh Gravelle

    () (National Primary Care Research and Development Centre, Centre for Health Economics, University of York)


We investigate the relationship between GP supply and body mass index (BMI) in England. Individual level BMI is regressed against area whole time equivalent GPs per 1,000 population plus individual and area level covariates. Using IV models we find that a 10% increase in GP supply is associated with a mean reduction in BMI of around 1 kg/m2 (around 4% of mean BMI). Our study suggests that better primary care in the form of reduced list sizes per GP can improve the management of obesity.

Suggested Citation

  • Stephen Morris & Hugh Gravelle, 2006. "GP supply and obesity," Working Papers 013cherp, Centre for Health Economics, University of York.
  • Handle: RePEc:chy:respap:13cherp

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    References listed on IDEAS

    1. Loureiro, Maria L. & Nayga, Rodolfo Jr, 2006. "Obesity, weight loss, and physician's advice," Social Science & Medicine, Elsevier, vol. 62(10), pages 2458-2468, May.
    2. Morris, Stephen & Gravelle, Hugh, 2008. "GP supply and obesity," Journal of Health Economics, Elsevier, vol. 27(5), pages 1357-1367, September.
    3. Hugh Gravelle & Matthew Sutton & Stephen Morris & Frank Windmeijer & Alastair Leyland & Chris Dibben & Mike Muirhead, 2003. "Modelling supply and demand influences on the use of health care: implications for deriving a needs-based capitation formula," Health Economics, John Wiley & Sons, Ltd., vol. 12(12), pages 985-1004.
    4. Moulton, Brent R, 1990. "An Illustration of a Pitfall in Estimating the Effects of Aggregate Variables on Micro Unit," The Review of Economics and Statistics, MIT Press, vol. 72(2), pages 334-338, May.
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    Cited by:

    1. David G. Blanchflower & Andrew J. Oswald & Bert Van Landeghem, 2009. "Imitative Obesity and Relative Utility," Journal of the European Economic Association, MIT Press, vol. 7(2-3), pages 528-538, 04-05.
    2. Liu, Ya-Ming & Yang, Yea-Huei Kao & Hsieh, Chee-Ruey, 2012. "Regulation and competition in the Taiwanese pharmaceutical market under national health insurance," Journal of Health Economics, Elsevier, vol. 31(3), pages 471-483.
    3. Stephen Martin & Nigel Rice & Peter C Smith, 2007. "The Link Between Health Care Spending and Health Outcomes: Evidence from English Programme Budgeting Data," Working Papers 024cherp, Centre for Health Economics, University of York.
    4. Morris, Stephen & Gravelle, Hugh, 2008. "GP supply and obesity," Journal of Health Economics, Elsevier, vol. 27(5), pages 1357-1367, September.
    5. Hendrik Jürges & Vincent Pohl, 2012. "Medical guidelines, physician density, and quality of care: evidence from German SHARE data," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 13(5), pages 635-649, October.

    More about this item


    Obesity; GP supply; Primary care;

    JEL classification:

    • I10 - Health, Education, and Welfare - - Health - - - General
    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior


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