New paper from the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial.
We know that prostatic cells prefer fatty acids as fuel & that radio-labeled glucose PET can't be used to diagnose PCa, so what to make of the new study?
Note that:
"There were no linear associations between prostate cancer risk and consumption of sugars from fruit juices or dessert foods."
However, "consumption of sugars from sugar-sweetened beverages was associated with increased risk of prostate cancer among men receiving standard medical care."
The term "sugar" is often used loosely. For instance, why do so many papers refer to blood "sugar" when they mean "glucose". In the case of beverages, does "sugar" mean sucrose alone, or does it include high-fructose corn syrup? But in high enough doses, both will affect markers of the metabolic syndrome & increase PCa risk. Perhaps the issue is the size of the glucose challenge that can follow these drinks, & the size of the insulin response.
-Patrick
ncbi.nlm.nih.gov/pubmed/300...
Br J Nutr. 2018 Jul 26:1-8. doi: 10.1017/S0007114518001812. [Epub ahead of print]
Concentrated sugars and incidence of prostate cancer in a prospective cohort.
Miles FL1, Neuhouser ML2, Zhang ZF1.
Author information
1
1Department of Epidemiology,Fielding School of Public Health,University of California,Los Angeles,CA 90095-1772,USA.
2
2Cancer Prevention Program,Division of Public Health Sciences,Fred Hutchinson Cancer Research Center,Seattle,WA 98109,USA.
Abstract
The association between consumption of added or concentrated sugars and prostate cancer risk is unclear. We examined the association between concentrated sugars in beverages and desserts and prostate cancer risk among 22 720 men in the usual-care arm of the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial, enrolled during 1993-2001. After a median follow-up of 9 years, 1996 men were diagnosed with prostate cancer. Cox proportional hazards regression models were used to estimate hazard ratios (HR) for prostate cancer risk and 95 % CI, adjusting for potential confounding factors. Increased consumption of sugars from sugar-sweetened beverages was associated with increased risk of prostate cancer for men in the highest quartile of sugar consumption (HR: 1·21; 95 % CI 1·06, 1·39), and there was a linear trend (P<0·01). There were no linear associations between prostate cancer risk and consumption of sugars from fruit juices or dessert foods. In conclusion, in this prospective substudy within the PLCO trial, consumption of sugars from sugar-sweetened beverages was associated with increased risk of prostate cancer among men receiving standard medical care. Our study suggests that limiting intake of sugars from beverages may be important in the prevention of prostate cancer.
KEYWORDS:
Colorectal and Ovarian; DHQ diet history questionnaire; HR hazard ratio; Lung; PLCO Prostate; PSA prostate-specific antigen; Added sugars; Proportional hazards regression; Prospective cohorts; Prostate cancer risk
PMID: 30047347 DOI: 10.1017/S0007114518001812