How To Ensure Vitamin D Is Absorbed In The Gut, From Experts

When we discuss the gut, we’re primarily talking about the small intestine, where 90% of food is absorbed2. The quality of health in the gut is dependent on the microbiota (aka gut flora), which is made up of microscopic organisms (e.g., bacteria, viruses, and fungi) living in the intestines. Healthy gut flora—often called “good bacteria”—help with digestion, support immune function, and are even linked to cognitive function and mood.