Corn Silk (Stigma maydis) Powder for Management of Functional Constipation: An Interventional Study

Abstract

Background: Functional constipation is widely recognized as a common disorder across the world, although its reported prevalence differs considerably according to age, gender, diagnostic approach, country, and geographical region. Aim: The study aims to evaluate the efficacy of corn silk powder (CSP) in improving bowel function among adults with functional constipation. Study Design: A randomized controlled dietary intervention. Place and Duration of Study: Department of Food and Nutrition, GBPUAT Pantnagar; conducted over 15 days among adult participants diagnosed with functional constipation. Methodology: A total of 105 adults aged 18–75 years, diagnosed using the Bristol Stool Form Scale (BSFS), were randomly allocated into three groups of 35 each: Group I (Gp5g) received 5 g/day CSP, Group II (Gp10g) received 10 g/day CSP, and a control group received no supplementation. Stool consistency and gastrointestinal symptoms were recorded at baseline and post-intervention. Statistical analysis was performed to compare intra- and inter-group differences, with significance set at p<0.05. Results: Both intervention groups demonstrated significant improvement in stool consistency compared to the control group (p<0.05). By Day 5, a majority of participants in Gp5g and Gp10g achieved normal stool consistency (BSFS types 4–5). The Gp5g group showed gradual and sustained improvement with minimal side effects, whereas Gp10g exhibited a faster response but a higher incidence of loose stools (BSFS type 6). No serious adverse effects were reported. Participants in both supplemented groups reported improved ease and frequency of defecation. Conclusion: Corn silk powder is an effective and well-tolerated dietary intervention for managing functional constipation. A daily dose of 5 g appears optimal, balancing efficacy and tolerability. CSP holds potential as a low-cost, natural therapeutic option for community-level management of constipation, although further studies are recommended to validate long-term outcomes.