Researcher urges physicians to take note of findings
WebMD News from HealthDay
By Alan Mozes
THURSDAY, April 16, 2015 (HealthDay News) -- Blacks have a higher risk of developing prostate cancer than whites, and for obese black men, their risk can quadruple as their weight goes up, a new study indicates.
The findings from this large study should lead to a redoubling of efforts to encourage obesity prevention among black men, said study lead author Wendy Barrington, an assistant professor in the school of nursing at the University of Washington.
"The main 'take-home' point for practicing physicians is to recognize that obesity has a different relationship to prostate cancer risk in African-American [men] compared to non-Hispanic white men," said Barrington.
Why this might be so is "really just speculation at this point," Barrington noted.
"But it could also be that there's actually a biological difference between African-American and non-Hispanic white men . . . It's something for further research," Barrington added.
However, a cancer specialist pointed out the study only established an association between race, obesity and cancer, not a direct cause-and-effect relationship.
The study results appear in the April 16 online issue of JAMA Oncology.
About six in 10 prostate cancer cases occur in men older than 65, the American Cancer Society notes. For reasons that remain unclear, it has long been known that at any age, blacks face a greater overall risk for the disease than other men. The study team noted that blacks also face the highest risk for aggressive prostate cancer and death.
The trial included nearly 3,400 black men and almost 22,700 white men, all cancer-free and age 55 and up at the start.
Medical histories were gathered, including information on smoking, diabetes, family history of prostate cancer, ethnicity, and education. Body mass index (BMI) was also assessed. BMI is a calculation of body fat based on height and weight.
source : Obesity Linked to Greater Risk of Prostate Cancer in Blacks, Study Says