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Article

The Skin Microbiome

Tuesday, March 16th 2021 10:00am 2 mins read
Dr. Jessica Peatross @wplusbydrjess

Hospitalist & top functional MD who gets to the root cause. Stealth infection & environmental toxicity keynote speaker.

Does your skin have a microbiome just as your gut has one? Scientists are discovering that the answer is yes. However in contrast to the gut microbiome, which is an excellent habitat for growth of fermentative bacteria, the skin is not as ideal. Most of the epidermal layer that protects us from the elements is salty, dry, acidic, and nutrient-poor. The areas around lipid-rich hair follicles are the exceptions.

Despite the inhospitable environment, a wide array and physiologically important categories of viruses, bacteria, archaea, and fungi are found on the skin. On average, the typical person has around 1,000 species of bacteria on their skin. And on average, the typical adult has approximately two square meters of skin, which provides unique ecosystems that create favorable conditions for various subsets of organisms.

The skin microbiome

The seeds of the skin microbiome begin at birth. The first microbes work to train the immune system to accept commensal organisms ,which have a neutral or beneficial impact on their host, while being alert to pathogens. These microbial communities grow and diversify until puberty. Then developmental and hormonal changes help determine the final composition that exists throughout adulthood.

Over the past decade, scientists have discovered evidence of extensive communication between skin cells, bacteria, and immune cells. This communication reinforces and repairs the barrier that the skin represents, lessens excess inflammation, and increases the body’s defenses against infection.

Disturbances in the skin ecosystem can leave the epidermal layer susceptible to immune hypersensitivity disorders like skin allergies or eczema. In addition, this may cause interference with regular healing of chronic wounds like diabetic ulcers.

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