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- Title
Body Mass Index and Risk of Malignant Lymphoma in Scandinavian Men and Women.
- Authors
Chang, Ellen T.; Hjalgrim, Henrik; Smedby, Karin Ekström; Åkerman, Måns; Tani, Edneia; Johnsen, Hans E.; Glimelius, Bengt; Adami, Hans-Olov; Melbye, Mads
- Abstract
Background: The incidence of non-Hodgkin lymphoma and prevalence of obesity are increasing globally. A suggested positive association between obesity and risk of non-Hodgkin lymphoma has prompted us to investigate the relationship between body mass index (BMI) and risk of malignant lymphoma subtypes in a population-based case-control study. Methods: Telephone interviews were conducted with 3055 case patients with non-Hodgkin lymphoma and 618 case patients with Hodgkin lymphoma diagnosed between October 1, 1999, and August 30, 2002, and 3187 population-based control subjects. The interviews assessed current height, normal adult weight, and other possible risk factors. Multivariable odds ratios (ORs) and corresponding 95% confidence intervals (CIs) for risk of lymphoma were estimated by unconditional logistic regression. All statistical tests were two-sided. Results: BMI was not associated with risk of overall non-Hodgkin lymphoma or of Hodgkin lymphoma (for example, comparing the highly obese group [BMI ≥35.0 kg/m2] with the normal-weight group [BMI = 18.5–24.9 kg/m2], OR for risk of non-Hodgkin lymphoma = 0.9, 95% CI = 0.6 to 1.3; Ptrend across all categories of BMI = .27). BMI was also not associated with risk of any non-Hodgkin lymphoma subtype evaluated, although there was some evidence of a positive association with risk of diffuse large B-cell lymphoma (for example, comparing the highly obese group with the normal-weight group, OR for diffuse large B-cell lymphoma = 1.5, 95% CI = 0.9 to 2.4; Ptrend =.05). Conclusions: Excess weight does not appear to be associated with an increased risk of malignant lymphoma in general, or with a risk of most major lymphoma subtypes. Hence, the growing incidence of obesity is unlikely to be an important contributor to the increasing incidence of non-Hodgkin lymphoma worldwide.
- Subjects
LYMPHOMAS; RETICULOENDOTHELIAL granulomas; OBESITY; BODY weight; METABOLIC disorders
- Publication
JNCI: Journal of the National Cancer Institute, 2005, Vol 97, Issue 3, p210
- ISSN
0027-8874
- Publication type
Article
- DOI
10.1093/jnci/dji012