A Deep Dive Into the Ecosystem Inside You

The human microbiome refers to the trillions of microorganisms—bacteria, fungi, viruses, and other microbes—that live in and on your body. The majority of these live in your gut, especially in the colon, and collectively they form an internal ecosystem that is absolutely essential for your overall health.

When people talk about “gut health,” what they’re often referring to is the balance, diversity, and functionality of the gut microbiome.

⸻

What Makes Up the Microbiome?

The microbiome is made up of many different types of organisms:

•    Bacteria – Both helpful and potentially harmful species

•    Fungi – Such as Candida (which is normal in small amounts)

•    Viruses – Including bacteriophages that can regulate bacterial populations

•    Archaea – Less understood microbes that affect digestion

•    Protozoa & Parasites – Some are harmless, others can cause issues

The goal is not to eliminate microbes, but to create balance between beneficial and potentially problematic organisms.

⸻

Where Does It Come From?

You begin forming your microbiome during birth—especially if born vaginally—and continue developing it through:

•    Breastfeeding

•    Early childhood environment (pets, dirt, siblings)

•    Diet and exposure to fermented or raw foods

•    Illnesses and medications (especially antibiotics)

•    Stress, movement, and environmental exposures