And I think that as we continue to see people benefit from these medications, using them as tools and not as magic bullets, the moral failing argument will become less and less potent
Dietary influences are the most common cause of stool colour variation: Green stools : leafy vegetables (spinach, kale), green food colouring Red or reddish stools : beetroot, tomatoes, red food dyes, cranberries Orange stools : foods high in beta-carotene (carrots, sweet potatoes), rifampicin (an antibiotic) Dark brown to black : iron supplements, bismuth subsalicylate, liquorice, blueberries Pale or light-coloured : primarily caused by reduced bile flow into the intestine Medications and supplements frequently alter stool appearance: Iron supplements commonly cause dark green or black stools Rifampicin and rifabutin can produce orange-red discolouration Bismuth subsalicylate causes black stools Some vitamins and herbal supplements contain pigments that pass through the digestive system Medical conditions that may affect stool colour include: Pale/clay-coloured : biliary obstruction, hepatitis, cirrhosis, pancreatic disorders Black/tarry : upper gastrointestinal bleeding (peptic ulcers, gastritis) Bright red : lower gastrointestinal bleeding (haemorrhoids, diverticular disease, colorectal pathology) Yellow/greasy : malabsorption syndromes, coeliac disease, chronic pancreatitis Green : rapid intestinal transit, certain infections Patients commencing GLP-1 therapy often simultaneously modify their diet significantly, increasing vegetable intake and reducing processed foods as part of weight management efforts
Common Gastrointestinal Concerns Both dual and triple agonists share a class-wide side effect profile dominated by gastrointestinal issues, primarily: Nausea Diarrhea or Constipation Vomiting These effects are dose-related and typically peak during the dose-escalation phase
Tirzepatide versus Semaglutide Once Weekly in Patients with Type 2 Diabetes. New England Journal of Medicine , 2021
