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Body Mass Index and Breast Cancer Risk

Body Mass Index (BMI) is a person’s weight in kilograms divided by the square of height in meters. It categorizes that person as underweight, normal weight, overweight, or obese based on the obtained value. 

With the development of society, the prevalence of obesity has been rapidly increasing, which is a generally recognized risk factor for metabolic syndrome, type II diabetes mellitus, cardiovascular disease and several cancers including breast cancer, so it’s necessary to investigate the relationship between the body mass index (BMI) and different diseases.

In this study, the authors evaluated the association between the body mass index (BMI) of breast cancer patients and non-cancer females of the Eastern Province of Saudi Arabia. The data of weight, height and age was obtained from the patient records of 706 newly diagnosed breast cancer patients and of 20,872 non-cancer female patients who consulted the two largest hospitals in the Eastern Province of Saudi Arabia between 2006 and 2012. Factorial analysis of variance (ANOVA) was used to assess the association between the BMI, age and breast cancer status. And the study results showed that the BMI significantly increased with age, and that the percentage of obese women was high in all examined age groups. And the mean BMI of the non-cancer females was 29.4 and the percentage of obese patients of the different age groups ranged from 23.9% to 66.5%. The ANOVA revealed that breast cancer patients older than 50 years old had a significantly lower BMI compared to their non-cancer counterparts (p = 0.01).

In conclusion, the obtained data in this study confirmed the high BMI of the Saudi Arabian female population. And the reason for its finding of a lower BMI of postmenopausal breast cancer patients compared to their non-cancer counterparts was unclear. Besides, it’s recommended that future studies are warranted to assess the impact of possible confounding factors on the association between obesity and breast cancer risk.

Article by Volker Rudat, et al, from KSA.

Full access: http://mrw.so/1l8qS  

Image by Danilo Acosta, from Flickr-cc.

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