A new review of existing research suggests that the community of bacteria living in the gut and lungs during early life may play a role in the development of allergic diseases, metabolic disorders, and respiratory illnesses. The review looked at studies on the human microbiome in early life, but did not report how many studies were included or how many people were involved.
The findings are based on a review of previous research, not a new experiment. This type of study can show connections but cannot prove that the microbiome causes these conditions. The review did not report any safety concerns or limitations, but it is important to remember that this is a theoretical reference for early-life health protection and disease prevention.
For now, the main takeaway is that the early-life microbiome is an area of interest for future research. There is no specific advice for parents or individuals based on this review alone. More studies are needed to understand how the microbiome might be targeted to improve health outcomes.