psyllium huskGI surgeon Dr Karan Rajan seems pretty fond of psyllium husk. In a video posted last year, he extolled the virtues of the cheap, soluble fibre-rich supplement, explaining it can help to cure both constipation and diarrhoea.It is also, he added, pointing to this 2021 review of studies, “useful in some types of IBS.”But the surgeon never claimed,
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