Enabling Microbiomics- Driven Personalized Nutrition

The goal of this observational research study is to determine how diet contributes to various gastrointestinal related conditions. The main question investigators aim to answer is: Are host genetics, diet, and microbiome all important determinants of GI disorders, and how their relative contribution varies among individuals and populations.

Inclusion Criteria: * Age greater than or equal to 18 years * Gastrointestinal patients with or without genomic sequencing results available for the following cohorts: * Inflammatory Bowel Disease (IBD) * Irritable Bowel Syndrome (IBS) * Crohn's Disease * Celiac Disease * Diarrhea * Constipation * Healthy age and sex matched controls with or without genomic sequencing results available o Control is defined as patients without gastrointestinal disease or no symptoms at time of sampling * Able to provide written, informed consent * Participant has a smartphone device with access to internet connection Exclusion Criteria: * Patients with cognitive impairment * Active use of antibiotics at the time of stool collection