Research

Hormonal

Increased intake of starchy vegetables, specifically potatoes, corn, and peas, is positively associated with weight gain, contrasting with non-starchy vegetables.

Be mindful of starchy vegetables like potatoes, corn, and peas. Unlike leafy greens or broccoli, increasing your intake of these specific vegetables is linked to weight gain, likely due to their higher glycemic load. Balance your plate with non-starchy vegetables and moderate portions of starchy ones.

GoodRefutesHIGH confidence
On the other hand, increased intake of starchy vegetables, including corn, peas, and potatoes, was associated with weight gain... additional daily servings of baked, boiled or mashed potatoes (0.74 lb; 95% CI 0.19 to 1.30 lb), peas (1.13 lb; 95% CI 0.37 to 1.89 lb), or corn (2.04 lb; 95% CI 0.94 to 3.15 lb) were each positively associated with weight change.
Monica L. Bertoia et al. · PLoS Medicine · 2015

Why this rating

Same high-quality cohort data as N1, with specific subgroup analysis.

Source

Changes in Intake of Fruits and Vegetables and Weight Change in United States Men and Women Followed for Up to 24 Years: Analysis from Three Prospective Cohort Studies

Monica L. Bertoia et al. · PLoS Medicine · 2015

DOI 10.1371/journal.pmed.1001878

cohort · n=133468Cited 397×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →