Too much protein without fibre may upset gut balance, says surgeon

UK surgeon Dr Karan Rajan warns that excess protein in a fibre-poor diet can spill into the colon, where bacteria ferment it into compounds such as ammonia and hydrogen sulfide linked to gut inflammation. He says even athletes need only 1.6 to 2 grams per kilo daily, and recommends pairing protein with fibre and varying sources like yoghurt, eggs, beans, tofu and lentils.