What Microbiome Testing Actually Reveals About Your Skin and Your Health
May 2026 · By Berry Elly
When most people hear microbiome testing, they think gut health. Bloating, digestion, IBS. And yes, the microbiome has everything to do with those things. But it also has everything to do with your skin, your immune system, your inflammation levels, your mood, and how your body responds to almost every protocol you put it through.
The gut microbiome is a community of trillions of microorganisms that live in your digestive tract. They regulate inflammation, produce neurotransmitters, metabolize hormones, train your immune system, and determine how effectively you absorb the nutrients your body needs to function. When the community is balanced, everything downstream works better. When it is disrupted, the effects show up everywhere.
Here is what microbiome testing reveals that standard labs do not.
Pathogenic overgrowth. Certain bacteria and fungi, when present in excess, drive systemic inflammation, increase intestinal permeability, and create a low-grade immune response that shows up as skin reactivity, fatigue, brain fog, and weight resistance.
Beneficial bacteria depletion. Specific strains of beneficial bacteria are responsible for producing short-chain fatty acids that protect the gut lining, regulate cortisol, and support estrogen metabolism. When these are depleted, hormonal balance is disrupted even when hormone panels look normal.
Intestinal permeability. When the gut lining is compromised, partially digested proteins and bacterial fragments enter the bloodstream and trigger inflammatory responses. This is one of the most common and most underdiagnosed drivers of skin conditions, autoimmune reactivity, and treatment-resistant inflammation.
Neurotransmitter production. Approximately 90 percent of serotonin is produced in the gut. Microbiome disruption directly affects mood stability, sleep quality, and stress response. Women who feel anxious, flat, or unable to sleep despite doing everything right often have a microbiome story underneath it.
At Royalty Care, microbiome testing is part of how we build complete biological pictures for our clients. It is not an add-on. It is information that changes what we recommend and why. Because a protocol built on incomplete data is a protocol that guesses. We do not guess here.