How much of skin microbiome variability can demographics and lifestyle explain?

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Demographics, Physiology, and Lifestyle Factors Explain Up To 20 Percent of Skin Microbiome Variability

New research indicates that demographic, physiological, and lifestyle factors can account for as much as 20 percent of the variability observed in the bacteria present on human skin. This finding emerged from a comprehensive study that involved surveying 495 individuals across a wide age range, from 9 to 78 years old.
Key Factors Influencing Facial Skin Microbiome

The composition of the skin microbiome on the face is significantly influenced by several key elements. Notably, levels of skin porphyrins, which are fluorescent molecules produced by C. acnes, play a role. Additionally, chronological age and the consistent use of sun protection were identified as important contributing factors to the differences observed in facial skin microbiomes.
Oral Microbiome Associations Differ

In contrast to the facial skin, the microbiome within the mouth showed the strongest associations with different factors. Ethnicity and the habit of smoking were found to be the most influential elements shaping the bacterial communities inside the mouth, according to the study's findings.
Microbiome Patterns Correlate with Age and Skin Appearance

The study revealed distinct patterns within the skin microbiome that corresponded with chronological age. Furthermore, specific microbiome profiles were linked to the presence of facial wrinkles and hyperpigmented spots. The bacterium Corynebacterium kroppenstedtii was specifically identified and associated with ageing skin, marking a potential first step in understanding its role in the skin ageing process.

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How much of skin microbiome variability can demographics and lifestyle explain?

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