A population-based case–control study of lymphomas in England collected height and weight details from 699 non-Hodgkin's lymphoma (NHL) cases and 914 controls.
2005

Obesity and Genetic Factors in Non-Hodgkin's Lymphoma Risk

Sample size: 1613 publication 10 minutes Evidence: high

Author Information

Author(s): Willett E V, Skibola C F, Adamson P, Skibola D R, Morgan G J, Smith M T, Roman E

Primary Institution: University of York

Hypothesis

Does obesity and genetic variation in energy homeostasis genes increase the risk of non-Hodgkin's lymphoma?

Conclusion

Obesity is associated with an increased risk of non-Hodgkin's lymphoma, particularly diffuse large B-cell lymphoma, especially in younger men.

Supporting Evidence

  • Obesity was associated with an increased risk of non-Hodgkin's lymphoma with an odds ratio of 1.5.
  • The risk was particularly pronounced for diffuse large B-cell lymphoma with an odds ratio of 1.9.
  • Genetic variants in leptin and leptin receptor genes were investigated for their role in NHL risk.
  • Findings indicated that the association between obesity and NHL risk was stronger in men than women.
  • Self-reported height and weight data may have introduced bias in the study results.

Takeaway

Being overweight can make you more likely to get a type of cancer called non-Hodgkin's lymphoma, especially if you're a younger man.

Methodology

A case-control study matched cases and controls on sex and date of birth, collecting height and weight data and blood samples for genetic analysis.

Potential Biases

Potential bias due to self-reported data and differences in socioeconomic status between cases and controls.

Limitations

Self-reported height and weight may introduce bias, and the study's findings may reflect differential participation among cases and controls.

Participant Demographics

Participants included 699 non-Hodgkin's lymphoma cases and 914 controls, primarily Caucasian, aged 18-64.

Statistical Information

P-Value

p<0.05

Confidence Interval

95% CI 1.1–2.1

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1038/sj.bjc.6602762

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