Journal
NUTRIENTS
Volume 15, Issue 14, Pages -Publisher
MDPI
DOI: 10.3390/nu15143098
Keywords
dietary acid load; cancer; Uruguay; neoplasms; potential renal acid load; net endogenous acid production; nutrition; cancer epidemiology
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Dietary acid load (DAL) is recognized as a risk factor for several chronic disorders. Recent evidence suggests that an elevated DAL could increase the risk for several cancers. This review summarizes the potential role of DAL in Uruguayan cancer patients and outlines the mediating pathophysiological pathways.
Dietary acid load (DAL) is recognized as a risk factor for several chronic disorders, including obesity, diabetes, and osteoporosis. Recent evidence suggests that an elevated DAL, as measured by the validated potential renal acid load (PRAL) and net endogenous acid production (NEAP) scores, could also increase the risk for several cancers. This narrative review summarizes the potential role of DAL in Uruguayan cancer patients and outlines the potentially involved pathophysiological pathways that mediate the role of DAL in both cancer development and growth. Although Uruguay is a developing country, its average diet is a heavily meat-based Western one, translating into a supraphysiological acid burden from diet. In recent years, we have published epidemiologic evidence based on ten case-control studies involving 3736 cancer cases and 9534 hospital-based controls. Odds ratios and 95% confidence intervals were estimated for each interest variable to analyze the association between the exposure levels of DAL scores and cancer, calculated by unconditional logistic regression. In a majority of the cases, the highest DAL scores tended to double the cancer risk as compared to the lowest category. We also found high risks for methionine intake, an acidifying amino acid found in higher concentrations in animal-based foods, which may increase cancer risks at least by a joint action based on the pH and the proliferation enhancing properties of the amino acid itself.
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