Probiotics Improve Health Young Volunteers' Gut Microbiota

Inclusion Criteria: 1. Aged 19-45 years; 2. Willing to voluntarily agree to and comply with the trial protocol, and capable of timely participation in screening and follow-up; 3. Have not suffered from gastrointestinal diseases in the past month; 4. Have not taken antibiotics in the past month. Exclusion Criteria: 1. Individuals under 19 or over 45 years of age, with an allergic constitution or allergy to any component of the test substance, symptoms of alcohol allergy, and pregnant or breastfeeding women; 2. Those who experience discomfort such as diarrhea or bloating after taking the test substance; 3. Patients with serious diseases of the cardiovascular, liver, kidney, hematopoietic systems, autoimmune diseases, endocrine disorders, mental illnesses, existing high blood sugar, or unhealthy gastrointestinal conditions; 4. Those who discontinue the test sample or take other medications midway, making it difficult to judge efficacy or with incomplete data; 5. Recently taken probiotics, prebiotics, or antibiotics related to the function of the test substance, affecting the judgment of results; 6. Individuals with a daily diet that is either too light or too greasy; those with special dietary structures due to weight loss or other reasons (such as a ketogenic diet); 7. Individuals with low body fat, BMI \< 23.