Diarrhea

Diarrhea is loose, watery stools. A person with diarrhea typically passes stool more than three times a day. People with diarrhea may pass more than a quart of stool a day.

What is Diarrhea?

The term diarrhea (also spelled diarrhoea) refers to passage of loose, watery stools. The usual frequency of passing loose stools or watery stools in cases of diarrhea is at least three or more times a day.

Diarrhea in Children

Chronic Diarrhea

Diarrhea Treatment

Diarrhea Causes

Acute Diarrhea

Diarrhea Symptoms

Diarrhea Prevention

Stomach Cramps and Diarrhea: Distinguishing Between Common and Serious Causes

Diarrhea Epidemiology

Latest Diarrhea News and Research

Scientists reveal how cholera bacteria activate toxin genes in the human gut

Cholera remains a major global public health challenge, with an estimated 1.3 to 4 million cases and tens of thousands of deaths reported worldwide each year.

14 Jan 2026

Short-term, calorie-restrictive diet improves Crohn’s disease symptoms

A Stanford Medicine-led study finds a short-term, calorie-restrictive diet significantly improved symptoms.

13 Jan 2026

Dietary protein reshapes how cholera bacteria colonize the gut

Researchers investigate the role of dietary components and the gut microbiota in cholera.

13 Jan 2026

Scientists identify a molecular switch that controls water flow in the gut

Although constipation and diarrhea may seem like opposite problems, they both hinge on the same underlying issue: how much fluid moves into the gut. These common issues affect millions of people in the U.S. each year, yet scientists have not fully understood what regulates intestinal fluid balance.

9 Jan 2026

Bowel preparation for colonoscopies may temporarily alter gut balance, preclinical study suggests

New preclinical research suggests that bowel preparation procedures for colonoscopies may temporarily alter gut balance, culminating in unappreciated effects in patients with compromised gastrointestinal health.

8 Jan 2026

A high-protein diet shows strong anti-cholera effects

Cholera, a severe bacterial infection that causes diarrhea and kills if untreated, can be defeated with a diet high in protein, according to a new study from UC Riverside.

8 Jan 2026

Single-dose oral cholera vaccine shows promising results in early clinical trial

Clinical trial shows promising results for PanChol, a single-dose oral vaccine aimed at the up to 4 million annual cholera cases worldwide.

7 Jan 2026

Acupuncture may help ICU patients recover faster

Acupuncture's multi-pathway effects in ICU patients may reduce complications, support rehabilitation, and improve recovery while minimizing medication use.

6 Jan 2026

Unnecessary gluten-free diets may put children at risk

Understanding gluten-related disorders is crucial for pediatric nutrition, as gluten-free diets can pose health risks without appropriate medical supervision.

15 Dec 2025

A new trial investigates whether the MIND diet can be scaled for obesity management

This study protocol outlines a 12-week randomized trial testing whether a MIND diet intervention is feasible, acceptable, and sustainable for adults with obesity in Sweden. It will generate preliminary evidence on adherence, mental well-being, and gut microbiota changes to inform larger efficacy trials.

14 Dec 2025

Study reveals how Ebola and Marburg viruses damage the human gut

Ebola (EBOV) and Marburg virus (MARV) are highly lethal viruses that cause severe disease in infected patients by extensively damaging the body.

11 Dec 2025

Study uncovers how the body's bile acids bind to block C. diff's most dangerous toxin

In a major step towards a precision therapy for Clostridioides difficile (C. diff) infection, researchers at The Hospital for Sick Children (SickKids) have uncovered how the body's bile acids bind to block C. diff's most dangerous toxin.

9 Dec 2025

Lubiprostone shows signs of slowing kidney function decline in chronic kidney disease

In adults with stage IIIb–IV chronic kidney disease, the constipation drug lubiprostone did not reduce gut-derived uremic toxins but preserved creatinine-based kidney function over 24 weeks. The benefit was linked to microbiome remodeling, increased polyamine production, and improved mitochondrial function rather than toxin lowering.

8 Dec 2025

Settling the creatine safety debate

Research confirms creatine's safety, highlighting misinformation and low-quality supplements as primary concerns over cancer and kidney health risks.

3 Dec 2025

Pneumococcal vaccination lowers antibiotic-resistant bacteria in children

Children in Guatemala who received a common vaccine that helps prevent pneumonia were less likely to carry antibiotic-resistant bacteria, according to a new study led by Washington State University researchers.

2 Dec 2025

Toxin-secreting gut bacterium emerges as a driver of ulcerative colitis

A toxin-secreting gut bacterium may fuel ulcerative colitis by killing protective immune cells that maintain intestinal homeostasis, according to a new study. The findings suggest potential for new treatment strategies.

20 Nov 2025

Oral microsphere pills can detect markers of gastrointestinal disease

Move over, colonoscopies - researchers report in ACS Sensors that they've developed a sensor made of tiny microspheres packed with blood-sensing bacteria that detect markers of gastrointestinal disease.

19 Nov 2025

Researchers confirm first death linked to tick-induced meat allergy

University of Virginia School of Medicine researchers have identified the first death caused by what is commonly called the "meat allergy" being spread by ticks.

13 Nov 2025

Cash transfer programs improve health outcomes across low- and middle-income countries

Large-scale, government-led cash transfer programs drove significant improvements in health outcomes across low- and middle-income countries (LMICs), according to a major new study in The Lancet from researchers at the University of Pennsylvania Perelman School of Medicine.

10 Nov 2025

Experimental intranasal vaccine triggers broad immune response against multiple strains of H5N1

Researchers at the University of Maryland School of Medicine's Center for Vaccine Development and Global Health (CVD) reported encouraging results from an early phase clinical trial that found an experimental intranasal vaccine triggered a broad immune response against multiple strains of H5N1 "bird flu".

6 Nov 2025

Diarrhea

Overview

Diarrhea in Children

Chronic Diarrhea

Diarrhea Treatment

Feature Articles

Diarrhea Causes

Acute Diarrhea

Diarrhea Symptoms

Diarrhea Prevention

Stomach Cramps and Diarrhea: Distinguishing Between Common and Serious Causes

Diarrhea Epidemiology

Latest Diarrhea News and Research

Scientists reveal how cholera bacteria activate toxin genes in the human gut

Short-term, calorie-restrictive diet improves Crohn’s disease symptoms

Dietary protein reshapes how cholera bacteria colonize the gut

Scientists identify a molecular switch that controls water flow in the gut

Bowel preparation for colonoscopies may temporarily alter gut balance, preclinical study suggests

A high-protein diet shows strong anti-cholera effects

Single-dose oral cholera vaccine shows promising results in early clinical trial

Acupuncture may help ICU patients recover faster

Unnecessary gluten-free diets may put children at risk

A new trial investigates whether the MIND diet can be scaled for obesity management

Study reveals how Ebola and Marburg viruses damage the human gut

Study uncovers how the body's bile acids bind to block C. diff's most dangerous toxin

Lubiprostone shows signs of slowing kidney function decline in chronic kidney disease

Settling the creatine safety debate

Pneumococcal vaccination lowers antibiotic-resistant bacteria in children

Toxin-secreting gut bacterium emerges as a driver of ulcerative colitis

Oral microsphere pills can detect markers of gastrointestinal disease

Researchers confirm first death linked to tick-induced meat allergy

Cash transfer programs improve health outcomes across low- and middle-income countries

Experimental intranasal vaccine triggers broad immune response against multiple strains of H5N1

Unveiling Hidden Potential: Organoids for Disease Modeling in Neuroscience Research

How GLP‑1 Agonists Are Shaping the Future of Obesity Treatment With Dr Bryony Henderson

Flow chemistry, AI, and NMR: A next-gen approach to scalable API production

Diarrhea

Overview

Feature Articles

Diarrhea Causes

Acute Diarrhea

Diarrhea Symptoms

Diarrhea Prevention

Stomach Cramps and Diarrhea: Distinguishing Between Common and Serious Causes

Diarrhea Epidemiology

Latest Diarrhea News and Research

Unveiling Hidden Potential: Organoids for Disease Modeling in Neuroscience Research

How GLP‑1 Agonists Are Shaping the Future of Obesity Treatment With Dr Bryony Henderson

Flow chemistry, AI, and NMR: A next-gen approach to scalable API production

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