What is the gut microbiome, and why does it matter?

Your large intestine is home to trillions of bacteria, viruses and fungi. Together they help break down food, make certain vitamins, train your immune system and send signals to your brain.

Keeping it balanced

Fiber-rich plants, fermented foods, sleep and movement feed a diverse microbiome. Antibiotics, ultra-processed food and chronic stress can throw it off.

Taking an antibiotic or considering a probiotic? Ask our pharmacists what fits your medications — we stock most vitamins and supplements and can special-order the rest.