Research
Adherence
RYGB surgery leads to a conditioned avoidance of high-fat foods, where patients continue to find fat palatable ('like') but reduce consumption ('want') due to negative gastrointestinal feedback.
You may still enjoy fatty foods, but your body has likely learned to limit them through conditioning. This is a normal, healthy adaptation to surgery, not a sign of failure.
ModerateQualifiesMEDIUM confidence
This pattern of behaviour may be best referred to as avoidance, as the authors believe the findings are not consistent with aversion; the former implies that the animals still find the food palatable i.e. they like the food but they do not want it.
Why this rating
Based largely on animal models and self-reported human data, which the paper notes has methodological limitations.
Source
Assessing Alterations in Food Preference as a Mechanism Contributing to Weight Loss After Gastric Bypass Surgery
Audrey Melvin et al. · EMJ Gastroenterology · 2016
DOI 10.33590/emjgastroenterol/10310586
narrative_review
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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