Study of Yili "Changqing" Pro-ABB Yoghurt in the Improvement of Human Gastrointestinal Tract System

Inclusion Criteria: 1. Male or female subjects, 25-45 yrs; 2. Non-specific and/or moderate constipation; 3. Irregular or occasional gastrointestinal disorders (flatulence, gurgling, feeling heavy after eating, abdominal pain); 4. Slow transit or irregular bowels movements (abnormal feces solidity, bowel movements decreased, e.g. every 2-3 days or less than 3 times per week). Exclusion Criteria: 1. Diagnosed as chronic constipation; 2. Treated gastrointestinal symptoms; 3. Lactose Intolerance; 4. Treatment by analgesic such as aspirin and paracetamol; 5. Had laxatives or other remedies to promote digestion 2 weeks prior to the study start; 6. Consuming dairy products or supplements containing pro/pre-biotic 10 days prior to the study start; 7. Currently suffering from diarrhea.