The goal of this clinical trial is to study the effects of probiotic supplementation on stress levels and bowel habits in healthy Saudi adults for both males and females.

The main questions it aims to answer are:

Does probiotic supplementation decrease stress levels? Does probiotic supplementation improve bowel habits?

Researchers compared between the intervention group receiving probiotic supplements with high stress levels with a control group not receiving probiotics with high stress levels to see if probiotics decreases stress levels.

Participants were required to

1. Attend a visit to the nutrition clinic at Umm AL-Qura University to assess for eligibility.
2. Eligible participants were asked to sign a consent form and anthropometrics, stress, bowel habits, food records and knowledge on probiotics were collected
3. Participants were randomized based on lottery based method to an interventional or control group
4. Intervention group received 30 capsules of probiotics (Lactobacillus rhamnosus GG, 6x10^9 cpu) to be taken once daily
5. After 30 days, all participants had to attend a second visit at the nutrition clinic at Umm Al-Qura University to assess stress levels, bowel habits and receive their incentives (discount voucher of restaurants).

Inclusion Criteria:

• Students at Umm Al-Qura University
• Age ≥ 18 years
• Healthy individuals
• Both genders
• Saudi nationality

Exclusion Criteria:

• Diagnosed with chronic illness or/and psychiatric condition
• Consumption of medications or supplements in the previous 3 months
• Pregnant and breastfeeding
• Smoker

The following may be shared:

Study Protocol Statistical Analysis Plan (SAP) Informed Consent Form (ICF) Clinical Study Report (CSR) Analytic Code