Setup, so nobody has to ask: constipation · semaglutide · FLOW.
I have read the primary source rather than the summary, which has left me with more questions.
I understand the headline. I do not understand the footnotes, and the footnotes look important.
How should I read this, and where are the traps?
The short version: fibre to 25 to 30 grams a day, fluid to match, movement daily, and osmotic laxatives if that is insufficient.
Magnesium-containing preparations act osmotically and are widely used; they are a laxative rather than a supplement in this context, and the dose is what makes the difference.
Stimulant laxatives are effective and are not a first choice for a problem that is going to persist for months, because of tolerance and dependence concerns with regular use.
Osmotic laxatives such as macrogol have the strongest evidence base for chronic constipation and are first-line in most guidelines.
Osmotic first, stimulant reluctantly, and not as a standing arrangement.
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Browse resultsAnswering this needs the actual fibre and fluid intake, and people are almost always taking less of both than they think.
Soluble fibre — psyllium, oats, legumes — holds water and softens stool. Insoluble fibre adds bulk and speeds transit. In slowed-transit constipation the soluble kind is generally the more useful of the two.
To be exact about it, red flags that change this from a management question to a clinical one: no bowel movement for several days with abdominal distension and vomiting, blood in the stool, or unexplained weight loss beyond what is expected.
Physical activity has a small measurable effect on colonic transit time in controlled studies.
This one does not attenuate with tolerance. Plan for it rather than waiting it out.
edited 29 Jul 2024 by juan_esquivel — added the citation requested in comments
This is the adverse effect that persists longest, because unlike nausea it does not attenuate with tolerance.
Physical activity has a modest but real effect on transit time and is free, which makes it worth including even though it will not fix this on its own.
Aim for 25 to 30 grams of fibre a day, which requires deliberate planning at a reduced total intake because fibre-rich foods are bulky and satiating exactly when appetite is suppressed.
25 to 30 grams a day, deliberately planned, because it will not happen by accident.
Put another way, adding fibre without adding fluid makes it worse, which is the most common self-inflicted error in this tag.
Osmotic agents such as macrogol draw water into the lumen and are the usual first pharmacological step; they work with the mechanism rather than against it.
Nothing here is medical advice.
Fibre and fluid together. Fibre alone makes it worse and that is the commonest mistake.
Start with the three inputs: fibre grams, fluid volume and physical activity. Most cases resolve on the first two.
Adding fibre without adding fluid produces a larger, drier, harder stool and makes the problem worse. The fluid is not optional and is the step people skip.
Research-use compounds are not approved for human use.
Pain, distension and vomiting together are urgent. That is not constipation.
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