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Aerial view Mangrove forest and canal through the forest.
Garbage to Guts: The Slow-Churn of Plastic Waste
The winding trail of environmental microplastics leads researchers to the human digestive ecosystem.
Garbage to Guts: The Slow-Churn of Plastic Waste
Garbage to Guts: The Slow-Churn of Plastic Waste

The winding trail of environmental microplastics leads researchers to the human digestive ecosystem.

The winding trail of environmental microplastics leads researchers to the human digestive ecosystem.

gut microbiome

Two pink-colored, rod-shaped bacteria interacting with a blue-colored human cell
Gut Bacterium Linked to Depression in Premenopause
Alejandra Manjarrez, PhD | Mar 17, 2023 | 2 min read
The opportunistic pathogen Klebsiella aerogenes degrades estradiol and induces depressive-like behavior in mice, a study finds.
T regulatory cell in red sandwiching an antigen presenting cell in blue
Gut Bacteria Help T Cells Heal Muscle: Study
Natalia Mesa, PhD | Mar 14, 2023 | 4 min read
Regulatory T cells in the colon travel to muscles to promote wound healing in mice, raising questions about how antibiotics may impact injury recovery.
Learn about the latest research on optimal vaccine-induced immune responses
Modulating the Immune Response to Vaccines
The Scientist’s Creative Services Team | 1 min read
Researchers uncover innovative natural approaches to fine-tune immunity from vaccination.
Arial view of a water canal winding through a forest and spilling into the ocean.
Garbage to Guts: The Slow-Churn of Plastic Waste
Iris Kulbatski, PhD | Mar 13, 2023 | 4 min read
The winding trail of environmental microplastics is leading researchers to the human digestive ecosystem.
Artist's rendering of rod-shaped bacteria
Gut Microbiomes Offer Insights into Chronic Fatigue Syndrome
Shafaq Zia | Feb 21, 2023 | 2 min read
Levels of health-promoting gut bacteria are linked with severity of fatigue symptoms, a study finds.
How Gut Microbiomes Shape Anti-Tumor Immune Responses
How Gut Microbiomes Shape Anti-Tumor Immune Responses
The Scientist’s Creative Services Team | 1 min read
In this webinar, Andrew Y. Koh will discuss the role of the gut microbiome in modulating cancer immunotherapy. 
Pink neutrophils on a white background.
Mucus-Eating Gut Bacteria May Promote Fever After Cancer Treatment
Alejandra Manjarrez, PhD | Jan 5, 2023 | 3 min read
The expansion of mucus-degraders in the mouse gut—possibly due to poor nutrition—thins the colon’s mucus layer and may weaken defenses against blood-infecting microbes.
Matthieu Groussin sits with three other people on stools in front of a low table, on which there are several bowls of food. Another person stands above Groussin spooning something into a bowl.
Q&A: Gathering Diverse Microbiome Samples
Katherine Irving | Nov 3, 2022 | 8 min read
Cofounders of a microbiome biobank speak with The Scientist about their new partnership with nonprofit OpenBiome and how to ethically work with donors.
A person holding a section of his face and looking in to his brain through a magnifying glass stock illustration
Science Philosophy in a Flash - A Look at Aging Through Young Eyes 
Iris Kulbatski, PhD | 1 min read
Aimée Parker shares how her childlike curiosity and collaborative spirit motivate her scientific pursuits.
Illustration of green fluorescent bacterial cells.
Cocaine Use Creates Feedback Loop with Gut Bacteria: Mouse Study
Alejandra Manjarrez, PhD | Nov 1, 2022 | 3 min read
A jolt of norepinephrine in the mouse gut facilitates colonization by certain microbes, which in turn deplete glycine, enhancing cocaine-induced behaviors.
Three white mice
High-Fat Diet in Mice Affects Social Behavior Across Generations
Sophie Fessl, PhD | Oct 27, 2022 | 4 min read
Pups born to mice whose mothers had been fed a high-fat diet showed social deficits, a study shows. 
illustration of liver with veins in blue and arteries in red.
Ethanol-Making Microbe Tied to Nonalcoholic Fatty Liver Disease
Natalia Mesa, PhD | Oct 19, 2022 | 4 min read
A study adds to evidence linking gut bacteria to liver conditions in people who don’t drink excessive amounts of alcohol. 
A California coyote above Santa Monica beach
Human Gut Bacteria Show Up in Urban Wildlife
Bianca Nogrady | Sep 12, 2022 | 2 min read
The gut microbiomes of city-dwelling animals, including coyotes, lizards, and birds, show similarities to those found in humans who also live in urban environments.
Bright purple and orange lactobacillus bacteria.
How a Specific Gut Bacterium May Cause Type 1 Diabetes
Dan Robitzski | Aug 25, 2022 | 5 min read
A bacterium that produces an insulin-like peptide can give mice type 1 diabetes, and infection with the microbe seems to predict the onset of the disease in humans, a study finds.
A premature infant drinking from a bottle
In Search of the Best Milk Recipe for Preemies’ Gut Bacteria
Alejandra Manjarrez, PhD | Aug 22, 2022 | 5 min read
Milk fortifiers of human origin show no evident advantage in the development of the gut microbiota of premature infants over fortifiers derived from cows, while the intake of the mother’s own milk does, two studies suggest.
A jar full of artificial sweetener packets.
Artificial Sweeteners Alter Gut Bacteria in Humans
Shafaq Zia | Aug 19, 2022 | 4 min read
When consumed for as little as two weeks, common alternatives to sugar affect intestinal bacterial communities, with some reducing the body’s ability to regulate blood glucose levels, a study finds.
An abstract stained-glass portrait of a woman with an image of an eye representing the brain
Through the Looking Glass: Aging, Inflammation, and Gut Rejuvenation
Iris Kulbatski, PhD | Aug 8, 2022 | 4 min read
Renewing the aging gut microbiome holds promise for preventing inflammatory brain and eye degeneration.
Illustration of bacteriophages infecting a bacterium
Phages Treat Gut Inflammation in Mice
Andy Carstens | Aug 4, 2022 | 5 min read
Mixtures of viruses that attack inflammatory bowel disease–causing bacteria in mice also survive the digestive tract and are well-tolerated in humans, a study finds.
illustration of inside of gut with floating bacteria
Finding Could Pave the Way to New, Targeted Antibody Treatments
Natalia Mesa, PhD | Jul 8, 2022 | 3 min read
IgA antibodies appear to bind to specific species of commensal gut bacteria in mice, according to a study.
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