microbiome research

WashU Medicine has received an $11 million grant to investigate why resident microbes, normally harmless organisms living in and on the body, sometimes turn harmful and cause disease. The funding will support research into how these microbial communities shift from benign to dangerous, work that could lead to new ways of preventing infections and other microbiome-related conditions.

A new Nature study traces how gut bacteria migrated across the world alongside prehistoric human populations. The research suggests some microbial lineages co-evolved with humans for hundreds of thousands of years and are now vanishing from people in industrialised societies. The findings shed light on the deep evolutionary partnership between humans and their microbiome, and raise concerns about the health effects of losing these ancient microbes.

A UK study has found a connection between severe long COVID and changes in the gut microbiome, according to coverage by News-Medical. The research suggests that alterations in gut bacteria may be associated with the persistence and severity of long COVID symptoms, potentially offering new directions for diagnosis and treatment of the condition, which continues to affect many people after coronavirus infection.

New research suggests long COVID symptoms may be connected to the mix of bacteria found in patients' mouths and lungs. The findings point to possible differences in the airway microbiome of people with persistent symptoms, offering a potential clue to what drives the condition. Scientists say the link could help explain the wide range of lingering illness reported after infection and may guide future diagnostic and treatment approaches.

Mayo Clinic Press has published a piece examining common myths about the gut microbiome and contrasting them with current scientific evidence. The article aims to separate marketing claims and popular beliefs from what research actually shows about gut bacteria and health. It reflects ongoing public interest in gut health and probiotics.

A discussion of the Human–Environment–Microbiome Nexus is circulating, describing the continuous, bidirectional exchange of microorganisms between human surfaces such as skin, the respiratory tract and the oral cavity, and environmental sources including air, indoor surfaces, soil and water. The post frames this within a One Health framework, which links human, animal and environmental health, and readers are engaging with the interconnected view of microbial health.

STAT reports on growing scientific interest in the idea that the microbes living in a baby's gut during early development could influence brain health across a person's lifetime. Researchers are increasingly linking the infant microbiome to neurological development, raising questions about how early nutrition, antibiotics and environment might shape long-term cognitive outcomes.

New research indicates that severe long COVID is associated with distinct differences in patients' lung and oral microbiomes. The finding suggests that the community of microbes in the airways and mouth may play a role in why some people develop persistent, serious symptoms after infection. Researchers and health commentators are sharing the study, which could point toward microbiome-based diagnostics or treatments for long COVID patients.

Researchers report that gut bacteria carried by people on different continents mirror ancient human migration patterns, suggesting microbial lineages have co-evolved with human populations over tens of thousands of years. Studies from Arizona State University and Stanford Medicine indicate these microbes were inherited alongside their hosts rather than acquired from the environment, offering a new lens on human history and health.

A new report says gut bacteria evolve mainly by swapping genes with each other rather than through gradual mutation. Horizontal gene transfer, the exchange of DNA between microbes, appears to shape how intestinal bacterial populations adapt and diversify, following an underlying evolutionary pattern. The finding could influence how scientists study antibiotic resistance and the ecology of the human microbiome, areas where rapid bacterial adaptation matters greatly.

Researchers highlight cpn60, a housekeeping gene, as an effective marker for profiling living microbial communities. Unlike common ribosomal markers, cpn60 can distinguish active organisms within complex microbiomes, making it useful in health, environmental and food microbiology. The gene's variability offers finer resolution for identifying species and tracking microbial diversity in samples where many microbes are difficult to culture.

A new report suggests that the bacteria living in the human mouth may be connected to how quickly people process information and react. The finding points to a possible relationship between oral microbiomes and cognitive speed, adding to growing research on how microbes in the body influence the brain. It is early science, and no one is claiming bacteria directly change intelligence, but the link is notable for a field where gut-brain connections have already drawn wide attention.

Researchers at the University of Maine are calling for a broader view of health that links the human microbiome to social inequity and structural conditions such as poverty, housing and access to care. The argument is that microbes alone do not determine wellbeing; the environments and social systems people live in shape microbiomes too, so tackling health disparities requires addressing those underlying conditions.

A new report from News-Medical explores the eye microbiome, the community of bacteria living on the eye's surface, and how it may influence eye health and disease. The piece examines how shifts in these microbial communities could contribute to conditions such as dry eye, infections and inflammation, and what this means for future treatments.

New research suggests that the mix of bacteria living in a person's gut could affect how many calories the body absorbs from food. The finding may help explain why people eating similar diets can gain weight at different rates, and could eventually shape personalised approaches to nutrition and weight management. Health and nutrition outlets are picking up the story.

Researchers have published a review examining how the gut-lung axis regulates lung metastasis in colorectal cancer, and summarising progress in traditional Chinese medicine as a possible intervention. The paper outlines mechanisms by which gut microbes and immune pathways may influence tumour spread to the lungs, and evaluates existing TCM research in this area.