In a comprehensive review published on May 15, 2024, in the open-access journal PLOS ONE, Angelo Capodici and his team analysed 49 previously published papers. These studies provide substantial evidence suggesting that vegetarian and vegan diets are generally linked to improved medical outcomes concerning cardiovascular health and cancer risk. The review highlights the reduced risks of cardiovascular diseases, cancer, and mortality associated with such dietary choices.
Historically, diets rich in animal products, refined grains, sugars, and salts have been linked to an increased risk of cardiovascular disease and cancer. Conversely, diets abundant in plant-based products have been shown to mitigate these risks. Nonetheless, the overall advantages of plant-based diets remain the subject of ongoing research.
Capodici and colleagues conducted an in-depth examination of 48 papers published between January 2000 and June 2023, employing an “umbrella” review methodology. This approach allowed them to aggregate and analyse data from numerous studies exploring the correlations between plant-based diets and cardiovascular health and cancer risk.
Their findings underscore a robust statistical association between vegetarian and vegan diets and improved health metrics across various risk factors pertinent to cardiometabolic diseases, cancer, and mortality. These diets exhibit favourable outcomes regarding blood pressure regulation, blood sugar management, and body mass index. Moreover, they are associated with decreased incidences of ischemic heart disease, gastrointestinal cancers, prostate cancer, and cardiovascular-related deaths.
However, the review also considers specific demographics, such as pregnant women, where vegetarian diets did not show significant differences in the risk of gestational diabetes and hypertension compared to non-plant-based diets.
While the evidence strongly supports the health benefits of plant-based diets, Capodici and colleagues caution that the substantial variations across studies temper the strength of this association. Factors such as diverse dietary patterns, patient demographics, study durations, and other variables introduce complexities that influence the outcomes.
Concerns persist regarding potential nutrient deficiencies that may arise from certain plant-based diets, which could affect specific populations. Hence, the researchers advocate for a nuanced approach to the widespread adoption of plant-based diets until further comprehensive research addresses these uncertainties.
The study underscores the potential of plant-based diets as effective preventive strategies against two of the most prevalent chronic diseases in modern society: cardiovascular diseases and cancer. Capodici and his team emphasise the need for continued research, inviting the audience to be part of the ongoing scientific exploration to fully understand and optimise the health benefits of these dietary choices. Their work contributes significantly to the evolving discourse on dietary recommendations and public health strategies in the 21st century.
More information: Angelo Capodici et al, Cardiovascular health and cancer risk associated with plant based diets: An umbrella review, PLoS ONE. DOI: 10.1371/journal.pone.0300711
Journal information: PLoS ONE Provided by PLOS
