Originally appeared in the article, "Gut Health Is Everywhere—But What Does ‘Healing’ Your Gut Even Mean?," by Maki Yazawa in Well+Good.
These days, it’s nearly impossible to escape the neverending chatter on social media related to gut health. And while we’re all about self-care, it can be challenging to discern what “healing” your gut even means when there’s little to no context or even questionable data before us.

That said, having a healthy gut is extremely important, as it can impact so many facets of overall well-being. The key to actually striking balance with your microbiome starts with this: ensuring the information you consume (literally) checks out. To that end, we spoke with Ali Rezaie, MD, a gastroenterologist and co-author of The Microbiome Connection, and the creator of Low Fermentation Eating—the inspiration for The Good LFE Cookbook—to set the record straight on what having a healthy gut really means and how to ensure the steps you take to get there are tailored to your body's specific needs.


For starters, there isn’t just one way to define a healthy gut

First things first, Dr. Rezaie explains that defining a “healthy gut” isn’t as simple as you may think, because it’s simply not a one-size-fits-all definition. “We don’t know what a ‘normal’ microbiome looks like," Dr. Rezaie says. "Your microbiome is unique to you, and there’s no known magic mix of bacteria."

While there are classic patterns found in good gut health, each of us has a distinctly different microbiome. "The microbiome exists in different parts of the body, however the largest microbiome by far is in the gut. The gut microbiome can, in a way, be considered a completely separate organ in the body—it contains a vast ecosystem of over 1000 known species of bacteria, viruses, fungi, and protozoa, each with the potential to play a different role in your body,” says Dr. Rezaie.

According to him, external factors can also impact the makeup of the gut microbiome—so no two will ever be exactly alike. “Your diet, environment, medications, and genetics influence your microbiome; even your pets can affect your microbiome,” Dr. Rezaie says. Yet, that’s not to say that one type of microbiome composition is necessarily superior to another—like our DNA, they’re just different.

Since it’s nearly impossible to categorize gut health into one bucket, Dr. Rezaie stresses the importance of always fact-checking information on the topic, especially on social media. Then, only apply the findings on an as-needed basis, if credible, and tailor them to your specific needs. “Similar to other fields of medicine, it’s not easy to discern credible versus untrustworthy sources of information on social media. Look for information generated or written by academics and known experts in the field,” Dr. Rezaie says.

That said, Dr. Rezaie acknowledges that even experts don’t know everything about the gut quite yet. “Studying the microbiome is a young discipline, and it is not uncommon to encounter conflicting information on such topics. That is because our understanding about the microbiome is rapidly evolving,” Dr. Rezaie says.