Medically reviewed by William Truswell, MD Vitamin D absorption is highest when supplements are taken with a meal that ...

Treatable gastrointestinal disorders in patients with symptoms typical for irritable bowel syndrome (IBS) may be overlooked. The prevalence of five gastrointestinal conditions—bile acid diarrhoea (BAD ...

Celiac disease (CeD) is an immune-mediated inflammatory disorder manifested by an aberrant immune response to dietary gluten in genetically predisposed individuals, which can ultimately lead to ...

There are several million people worldwide with various fat malabsorption syndromes including those who have undergone gastric bypass surgery and those with obesity. These patients often have a ...

Doctors use laboratory tests, imaging studies, and endoscopic procedures to help diagnose short bowel syndrome, which affects nutrient absorption in the small intestine. Short bowel syndrome (SBS) ...

A fecal fat test measures the amount of fat in a person’s stool. The test assesses the digestive function and absorption of fat in the gastrointestinal tract. Several medical conditions cause poor fat ...

The last stage of digestion is excretion. When you have bowel movements, you are removing all the material from food that your body couldn't use. Typically, your body has already removed essential ...

A common cause of SIBO is normal intestinal motility dysfunction. Slow movement through the intestines promotes bacterial growth. Possible causes include: History of food poisoning Diabetes Some ...

The body has a way of signalling when something isn’t quite right, and your stomach and intestines are particularly loud ...

Allison Herries, RDN, is a registered dietitian for a telehealth company, providing nutrition education and counseling to help her clients set and reach their personal health goals. Fructose ...

Fructose intolerance is a condition in which the body has difficulty digesting fructose, a natural sugar found in fruits, some vegetables, and added sweeteners such as high-fructose corn syrup. There ...