Research

Adherence

Dietary non-adherence, specifically the consumption of high-calorie liquids, 'grazing' (repeated small meals), and food indiscretion (sweets/fats), is a primary behavioral cause of weight regain and insufficient weight loss after bariatric surgery.

Avoid 'grazing' (frequent small snacks) and high-calorie liquids (sugary drinks, milkshakes). These bypass the stomach's physical restriction and satiety signals. Focus on structured, nutrient-dense meals and monitor liquid calorie intake closely.

ModerateSupportsHIGH confidence
Among RYGB patients, 23% demonstrated dietary non-adherence and continuation of their pre-surgical eating patterns, leading to suboptimal weight loss, WR, or both [50]. After BS, food indiscretion such as intake of excessive calories, snacks, sweets, oils, and fatty foods was statistically higher among patients with WR [51]. ... Grazing is defined as repeated episodes of consumption of smaller quantities of food over a long period of time, accompanied with feelings of loss of control [53, 54].
Walid El Ansari et al. · Obesity Surgery · 2021

Why this rating

Based on a scoping review of multiple studies, including RCTs and observational studies, showing consistent associations.

Source

Weight Regain and Insufficient Weight Loss After Bariatric Surgery: Definitions, Prevalence, Mechanisms, Predictors, Prevention and Management Strategies, and Knowledge Gaps—a Scoping Review

Walid El Ansari et al. · Obesity Surgery · 2021

DOI 10.1007/s11695-020-05160-5

narrative_reviewCited 456×
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DOI resolved against Crossref · corpus check 2026-06-10

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