Aim: Determine qualitative and quantitative parameters of mouth and intestines microbiocenosis of healthy people in the age aspect to assess the status of the digestive tract microbiota, as an indicator of human health.

Materials And Methods: We examined 74 healthy subjects aged 12-18 years who have a comparative aspect investigated qualitative and quantitative composition of the oral fluid and feces microflora.

Results: The mouth and intestines microbiota of healthy people has a number of interrelated characteristics defined microbiota of the entire digestive tract The first time were described three variants of the mouth and intestines microbiota, characterized by a certain combination of obligate and facultasive microflora, depending on the age and livelihoods.

Conclusion: Definition ofmouth and intestines microbiocenosis can be used to assess the status of the digestive tract microbiora as an indicator of health and correction of outlined features through a rational manner of life, balanced diet, pre-and probiorics administration.

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