The effect of the green powder supplement AG1 (formerly known as Athletic Greens) on markers of gut health. Additionally, the study assessed the supplement’s safety and tolerability.

The outcomes assessed included the microbiome composition, self-reported digestive health (assessed using the self-reported Digestion-Associated Quality of Life Questionnaire; DQLQ), and stool consistency and stool frequency. Safety was assessed using a complete blood panel, and tolerability was based on reports of digestive distress during the trial.

The health effects of eating honey with yogurt.

The primary outcome was intestinal transit time (how long it takes for food to pass completely through the intestinal tract). The secondary outcomes included digestive health and symptoms, gastrointestinal (GI) function, fecal microbiota composition, mood, and cognitive function.

The effect of iron supplements or iron-fortified food on the gut microbiota composition (i.e., beneficial vs. pathogenic bacteria) in infants.

The effect of a probiotic and amylase (a digestive enzyme used to break down carbohydrates) blend on gastrointestinal symptoms.

The primary outcomes were overall gastrointestinal symptoms, flatulence, bloating, and abdominal discomfort. The secondary outcomes were stool consistency, stool regularity, constipation, anxiety, and subjective well-being.

The outcomes were assessed using questionnaires or visual analog scales.

The primary outcome was the effect of treatment with aspirin/acetylsalicylic acid on intestinal permeability with or without consumption of a prophylactic (i.e., preventative) probiotic supplement.

The secondary outcomes included digestion-associated quality of life, and changes in the fecal microbiota composition.