Weight regain after bariatric surgery: causes and what to do
Some regain is expected and normal. Significant regain almost always has a behavioural cause with a practical fix.
What is normal
Most patients regain 5-10% of their lowest weight between years two and five. That is physiological adaptation, not failure, and it is why nadir weight is a poor benchmark for success.
The four common causes
Grazing on small amounts continuously, drinking calories, loss of protein priority, and stopping activity. Notice that none of them is 'the surgery stopped working', the anatomy rarely changes.
When anatomy is the cause
Sleeve dilatation and, after bypass, an enlarged gastro-jejunal anastomosis do occur. They are diagnosed by endoscopy, not assumption, and can be revised, but only after behavioural causes have been excluded.
The practical response
Return to protein-first eating, restart food logging for four weeks, add resistance training, and get bloods checked. Most patients recover the trajectory without further surgery, and our twelve-month programme exists precisely to catch this early.
The Ones People Actually Ask.
Can revision surgery fix regain?
Sometimes, but outcomes are better when behavioural causes are addressed first. Revision for regain alone has a higher complication rate than the original operation.
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What Stands Behind The Plan.
