Lab dish reveals how nutrients shape your gut bugs

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Healthy participant aged from 0 to 60 (based on medical history, physical examination and review of childhood growth chart) * Written informed consent has been obtained from the parent(s)/legally acceptable representative (LAR) of toddlers and teenagers * Written informed consent has been obtained for participants aged from 14 years old and above * Child's parent(s)/legal representative or participant is willing and able to fulfill the requirements of the study protocol. * Ability to collect their or their infant/child's fecal sample. Exclusion Criteria: * The parent(s)/legally acceptable representative (LAR) is not able to provide evidence of parental authority or legal representation. * Participant following a particular regimen of any type such as vegan, vegetarian, ketogenic, paleo diet, * Chronic or recurrent diarrhea with spontaneous bowel movements more often than 2 times daily, * Antibacterial/antifungal therapy during the 3 months prior to study enrolment, * Medications or supplements that are known to alter gut function or microbiota (i.e. acid antisecretory drugs, pre-/probiotics supplements, laxatives) during the 4 weeks prior to study enrolment, * Prior gastrointestinal surgery (apart from appendectomy, cholecystectomy or herniotomy), * Alcohol intake higher than 2 servings per day. A serving is 0.4 dl of strong alcohols, 1 dl of red or white wine, or 3 dl of beer, * Artificially sweetened beverage intake higher than 1000 ml/ per day, * Current or history of gastrointestinal diseases like (Celiac Disease, Crohn's Disease, Ulcerative colitis, Irritable Bowel Syndrome, infantile colic, recurrent abdominal pain, functional constipation, ulcers, infections (based on anamnesis), * Participants participating in another interventional study, * Participants/parents having a hierarchical or family link with the research team members.