Abstract
BackgroundRecent systematic review of clinical trials concluded that there was no convincing evidence to suggest an association between potatoes and risk of cardio-metabolic diseases.ObjectiveSummarize observational study data related to potato intake and cardio-metabolic health outcomes in adults using evidence mapping to assess the need for a future systematic review.MethodsWe searched MEDLINE®, Commonwealth Agricultural Bureau, and bibliographies for eligible observational studies published between 1946 and July 2020. Included studies evaluated potato intake in any form or as part of a dietary pattern with risk for cardio-metabolic diseases. Outcomes of interest included cardiovascular disease (CVD), cerebrovascular diseases, diabetes, hypertension, blood lipids, and body composition.ResultsOf 121 eligible studies, 51 reported two different methods to quantify potato intake (30 studies quantified intake as either grams or serving; 20 studies reported times per week; one reported both methods) and 70 reported potato as part of a dietary pattern and compared higher vs. lower intake, linear change, or difference in potato intake among cases and controls. Studies that quantified potato intake as either grams or serving reported the following outcomes: diabetes (8 studies); cerebrovascular stroke (6 studies); five studies each for CVD, systolic and diastolic blood pressure, and hypertension; three studies each for body mass index, body weight, CVD mortality; two studies for myocardial infarction; and one study each for blood glucose, HOMA-IR, and blood lipids. Higher potato intake was associated with an increased risk for blood pressure and body weight, and the results of all other outcomes observed no association. Potato consumption as part of dietary pattern studies reported a negative association between fried form of potato and all or most cardio-metabolic risk factors and diseases.ConclusionEvidence mapping found sufficient data on the association between potato intake and cardio-metabolic disease risk factors to warrant for a systematic review/meta-analysis of observational studies.
Highlights
Recent systematic review of clinical trials concluded that there was no convincing evidence to suggest an association between potatoes and risk of cardio-metabolic diseases
Evidence mapping found sufficient data on the association between potato intake and cardiometabolic disease risk factors to warrant for a systematic review/meta-analysis of observational studies
A recent systematic review of clinical trials concluded that there was no convincing evidence to suggest an association between intake of potatoes and risk of these diseases [5]
Summary
Recent systematic review of clinical trials concluded that there was no convincing evidence to suggest an association between potatoes and risk of cardio-metabolic diseases. Potatoes contribute the third-highest total phenolic content to the diet among fruits and vegetables, after oranges and apples [2] They are carbohydrate-rich providing little fat and many of the compounds found in potatoes have been shown to be beneficial to health through antioxidant, anti-inflammatory, and anti-hyperlipidemic actions [3]. They are considered to be a highglycemic-index food [4] and consumption has been suggested to increase the cardio-metabolic risk of type 2 diabetes, obesity, and cardiovascular disease (CVD). Results from single-meal test studies have found that intake of boiled potatoes increased satiety compared with intake of other iso-caloric preparations of rice, bread, and pasta [6]
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