Constipation In Adults Research Articles

Conservative, physical and surgical interventions for managing faecal incontinence and constipation in adults with central neurological diseases.

Conservative, physical and surgical interventions for managing faecal incontinence and constipation in adults with central neurological diseases.

Association between dietary copper intake and constipation in US adults

Dietary micronutrients are integral to the development and progression of constipation; however, the specific relationship between dietary copper intake and constipation has not been thoroughly investigated. This study aims to examine the correlation between dietary copper intake and constipation among U.S. adults, thereby offering novel insights and recommendations for the clinical management and prevention of constipation. Bowel health data from the National Health and Nutrition Examination Survey (NHANES) conducted between 2005 and 2010 were analyzed. Subjects’ dietary information was collected through questionnaire records. Multivariate logistic regression analysis, subgroup analysis, and curve fitting analysis were used to assess the correlation between dietary copper intake and chronic constipation. After adjusting for all possible confounders, each unit increase in dietary copper intake (converted to natural logarithms) was associated with a 20% reduction in the prevalence of constipation (OR = 0.80; 95% CI 0.65–0.98; P = 0.037). The interaction P-values for all subgroups were greater than 0.05, indicating that the findings were stable and consistent across subgroups. The present study showed a significant negative association between dietary copper intake and chronic constipation in adults. This finding raises clinical and healthcare professionals’ awareness of the impact of dietary trace elements on intestinal health and has important implications for the development of personalized meal plans and rational supplementation of trace copper in patients with constipation.

The Diagnostic Yield of Laboratory Tests in Chronic Constipation in Adults.

Chronic constipation is a common gastrointestinal complaint characterized by infrequent or difficult bowel movements, significantly affecting patients' quality of life. Laboratory markers offer potential diagnostic value in identifying physiological changes associated with chronic constipation, yet their effectiveness remains underexplored. The objective of this study was to evaluate the diagnostic value of various laboratory tests in identifying the underlying causes of chronic constipation among adults. A cross-sectional study was conducted at Kurdistan Private Hospital and Jeen Clinics in Duhok, Kurdistan, Iraq, from December 2022 to May 2024. A total of 132 patients meeting the Rome IV criteria for chronic constipation were included. Data collection involved demographic information, lifestyle factors, and laboratory tests, including complete blood count (CBC), thyroid stimulating hormone (TSH), serum calcium, serum potassium, serum glucose, serum creatinine, parathyroid hormone (PTH), and vitamin D levels. The study population consisted of 56 males (42.4%) and 76 females (57.6%) with a mean age of 46.5 years (SD=17 years) and a range of 18-81 years. Regular exercise was performed by only 56 (42.4%) patients, 85 (64.4%) patients were drinking less than 2 liters of water per day, and 108 (81.8%) were overweight or obese. Of the study population, hypothyroidism was detected in 27 (20.4%), hyperparathyroidism in 27 (20.4%), anemia in 58 (44%), leukocytosis in 24 (18.2%), renal impairment in 48 (36.4%), hypokalemia in four (3%), hyperkalemia in 12 (9.1%), hypocalcemia in 10 (7.6%), hypercalcemia in 12 (9.1%), impaired fasting glucose in 46 (34.8%), hyperglycemia in 21 (15.9%), and vitamin D deficiency in 80 (60.6%). Of the study population, 40 (30%) patients had normal laboratory investigations panel. In chronic constipation, laboratory tests have high diagnostic yield in adults and are essential for ruling out secondary causes of chronic constipation. Unhealthy lifestyles are prevalent in patients with chronic constipation.

Network meta-analysis of probiotics, prebiotics, and synbiotics for the treatment of chronic constipation in adults.

To compare the outcomes associated with the use of probiotics, prebiotics, and synbiotics for the treatment of chronic constipation in adults. We searched eight electronic databases from database inception to July 11, 2023, to identify randomized controlled trials (RCTs) that report efficacy and safety for the treatment of chronic constipation. The risk of bias in the included RCTs was evaluated according to the Cochrane tool, and the certainty of the evidence was assessed using the Confidence in Network Meta-Analysis framework. The analysis was conducted using R version 4.3.0. Out of the 37 RCTs, a total of 21 different types of interventions were reported, involving 3,903 patients. This NMA demonstrated that both prebiotics and synbiotics resulted in an increase in frequency of stool movements per week. Compared to placebo, lactulose (Mean difference [MD] = 3.39, 95% Confdence interval [CI] [1.13, 5.65], moderate certainty), mix2 (consisting of Lactulose and Bacillus coagulans) (MD = 3.63, 95% CI [1.37, 5.89], moderate certainty), mix6 (consisting of Lactulose and Bifidobacterium coagulans) (MD = 4.30, 95% CI [1.04, 7.54], low certainty), and mix7 (consisting of Lactulose, Bifidobacterium subtilis, and Enterococcus faecium) (MD = 4.58, 95% CI [1.35, 7.78], moderate certainty) exhibited a significant effect. Notably, mix7 demonstrated the highest probability of being the most effective intervention (94.8%). Furthermore, when compared to L. plantarum, four probiotics and two synbiotics showed significant advantages in the Patient Assessment of Constipation Symptoms (PAC-SYM) score. L. reuteri (MD = -13.74, 95% CI [-22.20, -4.66], very low certainty) exhibited a significant effect in improving the Patient Assessment of Constipation Quality of Life (PAC-QoL) score. In terms of safety, there were no statistically significant differences between the intervention and control groups in all adverse event analyses. Moderate to very low evidence supports the use of lactulose and synbiotics to increase the number of weekly stool movements in patients, particularly highlighting the significant impact of synbiotics in increasing the number of weekly stool movements in patients with constipation. The use of L. paracasei showed improvements in PAC-SYM scores, while L. reuteri demonstrated enhancements in PAC-QoL scores.

Efficacy and safety of linaclotide in treating functional constipation in paediatric patients: a randomised, double-blind, placebo-controlled, multicentre, phase 3 trial

Linaclotide, a guanylate cyclase C agonist, has been approved in the USA for the treatment of chronic idiopathic constipation and irritable bowel syndrome with predominant constipation in adults. We aimed to assess the efficacy and safety of linaclotide in paediatric patients aged 6-17 years with functional constipation. This randomised, double-blind, placebo-controlled, multicentre, phase 3 study was done at 64 clinic or hospital sites in seven countries (USA, Canada, Israel, Italy, the Netherlands, Ukraine, and Estonia). Patients aged 6-17 years who met modified Rome III criteria for functional constipation were randomly assigned (1:1), with a block size of four and stratified by age (6-11 years and 12-17 years), to receive either oral linaclotide 72 μg or placebo once daily for 12 weeks. Participants, investigators, and data assessors were masked to assignment. The primary efficacy endpoint was change from baseline (CFB) in the 12-week frequency rate of spontaneous bowel movements (SBMs; occurring in the absence of rescue medication on the calendar day of or before the bowel movement) per week and the secondary efficacy endpoint was CFB in stool consistency over the 12-week treatment period; efficacy and safety were analysed in all patients in the randomised population who received at least one dose of study intervention (modified intention-to-treat population and safety population, respectively). The study is registered with ClinicalTrials.gov, NCT04026113, and the functional constipation part of the study is complete. Between Oct 1, 2019, and March 21, 2022, 330 patients were enrolled and randomly assigned to linaclotide (n=166) or placebo (n=164). Two patients in the linaclotide group did not receive any treatment; thus, efficacy and safety endpoints were assessed in 328 patients (164 patients in each group). 293 (89%) patients completed the 12-week treatment period (148 in the linaclotide group and 145 in the placebo group). 181 (55%) of 328 patients were female and 147 (45%) were male. At baseline, the mean frequency rate for SBMs was 1·28 SBMs per week (SD 0·87) for placebo and 1·16 SBMs per week (0·83) for linaclotide, increasing to 2·29 SBMs per week (1·99) for placebo and 3·41 SBMs per week (2·76) for linaclotide during intervention. Compared with placebo (least-squares mean [LSM] CFB 1·05 SBMs per week [SE 0·19]), patients treated with linaclotide showed significant improvement in SBM frequency (LSM CFB 2·22 SBMs per week [0·19]; LSM CFB difference 1·17 SBMs per week [95% CI 0·65-1·69]; p<0·0001). Linaclotide also significantly improved stool consistency over placebo (LSM CFB 1·11 [SE 0·08] vs 0·69 [0·08]; LSM CFB difference 0·42 [95% CI 0·21-0·64]; p=0·0001). The most reported treatment-emergent adverse event (TEAE) by patients treated with linaclotide was diarrhoea (seven [4%] of 164 vs three [2%] of 164 patients in the placebo group) and by patients treated with placebo was COVID-19 (five [3%] vs four [2%] in the linaclotide group). The most frequent treatment-related TEAE was diarrhoea (linaclotide: six [4%] patients; placebo: two [1%] patients). One serious adverse event of special interest (treatment-related severe diarrhoea resulting in dehydration and hospitalisation) occurred in a female patient aged 17 years in the linaclotide group; this case resolved without sequelae after administration of intravenous fluids. No deaths occurred during the study. Linaclotide is an efficacious and well tolerated treatment for functional constipation in paediatric patients and has subsequently been approved by the US Food and Drug Administration for this indication. AbbVie and Ironwood Pharmaceuticals.

A randomized, double-blind, placebo-controlled clinical study to evaluate the efficacy and safety of Weizmannia coagulans BC99 in the treatment of chronic constipation in adults.

Weizmannia coagulans has emerged as a promising candidate for the management of gastrointestinal ailments. The novel strain of Weizmannia coagulans, Weizmannia coagulans BC99 (BC99), displays robust pathogen-inhibiting capabilities, susceptibility to various antibiotics, and a high level of biosafety. Nevertheless, additional research is necessary to fully understand its effectiveness in managing chronic constipation. This study investigates the role of BC99 in alleviating chronic constipation in a double-blind, placebo-controlled, randomized trial, and participants were divided into BC99 (2 billion CFU/d) or placebo (maltodextrin) groups for a 4-week period. Results showed that significant improvements were noted in the BC99 group, with an increase in complete spontaneous bowel movements (CSBM) after 4-week treatment compared to the placebo (p = 0.002). The BC99 group also showed significantly lower Quality of Life (PAC-QOL) scores and reduced Constipation Symptoms (PAC-SYM) scores after 4 weeks of treatment (p < 0.001), indicating symptomatic relief. Notably, BC99 effectively modulated key gut microbiota such as Bifidobacterium and Ruminococcus, linked to crucial metabolic pathways like glutathione metabolism. In all, BC99 is confirmed to be an effective and safe therapeutic option for the relief of adult chronic constipation, enhancing gut microbiota balance and influencing critical metabolic pathways. ChiCTR2200065493.

Association between Dietary Intake of Live Microbes and Chronic Constipation in Adults

BackgroundChronic constipation (CC) is a common gut health problem, and the role of live dietary microbes in CC is unclear. ObjectiveThis study aimed to investigate the relationship between dietary live microbes consumption and CC. MethodsUsing the National Health and Nutrition Examination Survey data (2005–2010), 11,170 adults who completed the 24-h face-to-face dietary recall and bowel health questionnaire were identified. CC was defined by the Bristol Stool Form Scale. Dietary live microbes intake was classified as low, medium, and high. Additionally, combined medium and high categories (MedHi) were analyzed. Multivariate regression models were constructed to assess the association between dietary intake of live microbes and CC. ResultsIn the weighted sample, the age-adjusted CC prevalence was 7.06% (95% confidence interval [CI]: 6.45, 7.67). In multivariate regression models, after controlling for potential confounders race/ethnicity, sex, body mass index, education, poverty, depression, caffeine intake, and alcohol intake, a significant inverse association between dietary live microbes consumption and CC was observed (odds ratio [OR]: 0.77, 95% CI: 0.61, 0.97, P-trend = 0.061). ConclusionsOur findings suggest that a high dietary live microbes consumption may be associated with lower odds of CC. However, further prospective studies are essential to confirm its effectiveness in reducing CC occurrence.

Systematic review and meta-analysis: Foods, drinks and diets and their effect on chronic constipation in adults.

Dietary approaches are recommended for the management of chronic constipation. Until now, there has been no systematic review and meta-analysis on foods, drinks and diets in constipation. To investigate the effect of foods, drinks and diets on response to treatment, stool output, gut transit time, symptoms, quality of life, adverse events and compliance in adults with chronic constipation via a systematic review and meta-analysis. Studies were identified using electronic databases (12th July 2023). Intervention trials (randomised controlled trials [RCTs], non-randomised, uncontrolled) were included. Risk of bias was assessed using Cochrane 2.0 (RCTs) or JBI Critical Appraisal (uncontrolled trials). Data from RCTs only were synthesised using risk ratios (RRs), mean differences (MDs), standardised mean differences (95% CI) using random-effects. We included 23 studies (17 RCTs, 6 uncontrolled; 1714 participants): kiwifruit (n = 7), high-mineral water (n = 4), prunes (n = 2), rye bread (n = 2), mango, fig, cereal, oat bran, yoghurt, water supplementation, prune juice, high-fibre diet, no-fibre diet (n = 1). Fruits resulted in higher stool frequency than psyllium (MD: +0.36 bowel movements [BM]/week, [0.25-0.48], n = 232), kiwifruits in particular (MD: +0.36 BM/week, [0.24-0.48], n = 192); there was no difference for prunes compared with psyllium. Rye bread resulted in higher stool frequency than white bread (MD: +0.43 BM/week, [0.03-0.83], n = 48). High-mineral water resulted in higher response to treatment than low-mineral water (RR: 1.47, [1.20-1.81], n = 539). Fruits and rye bread may improve certain constipation-related outcomes. There is a scarcity of evidence on foods, drinks and diets in constipation and further RCTs are needed.

Association of environmental tobacco smoke exposure with chronic constipation: a nationwide survey (NHANES 2005-2010).

Environmental tobacco smoke (ETS) exposure has been proven to induce digestive diseases such as hepatic steatosis, cirrhosis, and gastrointestinal cancer, yet little is known about the link between ETS exposure and constipation. This study aimed to investigate the impact of ETS exposure on the risk of chronic constipation in adults aged 20years or older. This is a cross-sectional study based on population. A total number of 7705 participants from the National Health and Nutrition Examination Survey (NHANES) 2005-2010 were included. Cotinine, an alkaloid found in tobacco, serves as a reliable and precise biomarker for measuring exposure to ETS. Hence, the categorization of exposure to ETS was conducted based on serum cotinine levels, resulting in four distinct categories. The association between ETS exposure and the risk of constipation was assessed using multivariable restricted cubic spline and logistic regression with odds ratio (OR) and 95% confidence interval (CI). The weighted prevalence of constipation in this study was estimated to be 7.51% based on stool consistency, or 3.11% based on stool frequency. The fully adjusted models indicated a positive correlation between exposure to ETS and constipation as measured by stool frequency, among adults with poor dietary quality (OR (95% CI): moderate exposure: 2.49 (1.05, 5.94); high exposure: 2.36(1.13, 4.95), P for trend = 0.03), while no significant difference was observed in the subgroup with a higher healthy eating index. Furthermore, the log10-transformed serum cotinine level exhibited a non-linear inverted U-shaped association with constipation in individuals with poor dietary quality (P overall = 0.0207, P non-linear = 0.0427). Conversely, a J-shaped non-linear relationship was observed in the subgroup with a higher healthy eating index (P overall = 0.0028, P non-linear = 0.0036). Our results show that ETS exposure appears to be positively associated with stool frequency-related chronic constipation in adults with poor dietary quality.

Relief from behind: enemas, the back door enforcement to help treating chronic constipation in adults

ABSTRACT Introduction Chronic constipation is a frequent symptom encountered in the daily clinical practice. The treatment of this condition mainly relies on the use of laxatives. However, patients’ satisfaction with this approach is limited, and alternative measures are often added to the treatment. Among these, particularly frequent worldwide is the use of enemas, even though literature data on its scientific validity are scarce. Areas covered In this article, by an extensive online search of Medline (through PubMed), Scopus, Cochrane CENTRAL, EMBASE, and the Science Citation Index, the available literature data on the use of enemas in adult patients with chronic constipation, also in the perspective of available guidelines on treatment of this pathological condition, were analyzed. Expert opinion Although the use of enemas remains a frequently employed method and it is considered as useful by many physicians as an adjunctive support for the treatment of chronic constipation in adults, this practice is not substantiated by rigorous scientific data, and some studies are available only for specific instances (fecal impaction, transanal irrigation). Thus, waiting for more robust scientific data, enemas treatment should be carried out on an individual patient’s basis, according to the experience of the caring physicians.

Linaclotide (Linzess) for functional constipation.

The guanylate cyclase-C receptor agonist linaclotide (Linzess – Abbvie/Ironwood) was first approved by the FDA in 2012 for treatment of chronic idiopathic constipation and irritable bowel syndrome with constipation in adults.

Plecanatide for the treatment of chronic idiopathic constipation and irritable bowel syndrome with constipation: Post hoc analyses of placebo-controlled trials in adults with severe constipation.

Patients with chronic idiopathic constipation (CIC) and irritable bowel syndrome with constipation (IBS-C) often experience severe symptoms. The current aim was to evaluate plecanatide in adults with CIC or IBS-C with severe constipation. Data were analyzed post hoc from randomized, placebo-controlled trials (CIC [n = 2], IBS-C [n = 2]) of plecanatide 3 mg, 6 mg, or placebo administered for 12 weeks. Severe constipation was defined as no complete spontaneous bowel movements (CSBMs) and an average straining score ≥3.0 (CIC; 5-point scale) or ≥8.0 (IBS-C; 11-point scale) during a 2-week screening. Primary efficacy endpoints were durable overall CSBM responders (CIC: ≥3 CSBMs/week, plus increase from baseline of ≥1 CSBM/week, for ≥9 of 12 weeks, including ≥3 of the last 4 weeks) and overall responders (IBS-C: ≥30% reduction from baseline in abdominal pain and ≥1 CSBM/week increase for ≥6 of 12 weeks). Severe constipation was observed in 24.5% (646/2639) and 24.2% (527/2176) of CIC and IBS-C populations, respectively. The CIC durable overall CSBM response rate (plecanatide 3 mg, 20.9%; plecanatide 6 mg, 20.2%; placebo, 11.3%) and IBS-C overall response rate (plecanatide 3 mg, 33.0%; plecanatide 6 mg, 31.0%; placebo, 19.0%) were significantly greater with plecanatide versus placebo (p ≤ 0.01 for all). Median time to first CSBM in CIC and IBS-C populations were significantly shorter with plecanatide 3 mg versus placebo (p = 0.01 for both). Plecanatide was effective in the treatment of severe constipation in adults with CIC or IBS-C.

The effect of food, vitamin, or mineral supplements on chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials.

Over-the-counter supplements are commonly used to manage chronic constipation; however, their efficacy remains unclear. We aimed to investigate the effect of food, vitamin or mineral supplements on stool output, gut transit time, symptoms, and quality of life in adults with chronic constipation via a systematic review and meta-analysis of randomized controlled trials (RCTs). Studies were identified using electronic databases, backward citation, and hand-searching abstracts. RCTs reporting administration of food supplements (e.g., fruit extract supplements), vitamin or mineral supplements in adults with chronic constipation were included. Studies administering whole foods (e.g., fruits) were excluded. Risk of bias (RoB) was assessed with Cochrane RoB 2.0. Relative risks (RR), mean differences (MD), or standardized mean differences (95% confidence intervals [CI]) were calculated using a random-effects model. Eight RCTs (787 participants) were included, investigating kiwifruit (n = 3 RCTs), senna (n = 2), magnesium oxide (n = 2), Ziziphus jujuba (n = 1), and Malva Sylvestris (n = 1) supplements. Kiwifruit supplements did not impact stool frequency (MD 0.24 bowel movements/week [-0.32, 0.80]; p = 0.40) or consistency (MD -0.11 Bristol points [-0.31, 0.09], p = 0.29). Overall, 61% responded to senna and 28% to control; however, this did not reach statistical significance (RR 2.78, [0.93, 8.27]; p = 0.07). Overall, 68% responded to magnesium oxide and 19% to control (RR 3.32 [1.59, 6.92]; p = 0.001). Magnesium oxide improved stool frequency (MD 3.72 bowel movements/week [1.41, 6.03]; p = 0.002) and consistency (MD 1.14 Bristol points [0.48, 1.79]; p = 0.0007). Magnesium oxide supplements are effective at improving cardinal symptoms of chronic constipation. Senna and kiwifruit supplements did not impact symptoms; however, findings were based on a small number of studies. Further research is required to investigate the effect of food supplements (e.g., kiwifruit supplements), as well as their whole food equivalents (e.g., whole kiwifruits) in chronic constipation.

Interferential therapy for chronic constipation in adults: The CON-COUR randomizedcontrolled trial.

Chronic constipation (CC) is a frequent condition, and the first-line treatment includes dietary rules, the use of laxatives, and biofeedback for evacuation disorders. However, almost half of the patients are dissatisfied with their current treatment. We report the first double-blind randomized multicenter trial assessing the effectiveness of transabdominal electrical stimulation by interferential therapy (IFT) in the treatment of CC in adults. A prospective, multicenter, randomized, double-blind, sham-controlled, parallel-group, phase 3 trial was conducted at 7 centers in France. The primary endpoint was 8-week efficacy as defined by the number of complete spontaneous bowel movements during the last 4weeks of the 8-week stimulation period. Secondary endpoints included the evaluation of the effects of IFT on symptoms (Patient Assessment of Constipation Symptoms questionnair (PAC-SYM)), quality of life (QOL) (Patient Assessment of Constipation Quality of Life), Colonic transit time (CTT), anorectal manometry, and patient satisfaction. The proportion of 8-week responders was not significantly different between the two groups (73.2% in the IFT group vs. 67.1% in the sham group). After 8weeks of stimulation, the mean overall PAC-SYM score and the mean reduction in the overall PAC-SYM score were significantly greater in the IFT group than in the sham group. No differences were observed concerning CTT, anorectal manometry, or patient satisfaction. Although the primary endpoint was not reached, IFT can significantly alleviate the symptoms and improve the QOL of CC patients. It can be assumed that new treatments require different modes of evaluation and that the assessment of patient-reported outcomes may become a priority among therapeutic targets of CC. Trial registration number NCT02381665.

The effect of spinal magnetic stimulation on the management of functional constipation in adults

BackgroundFunctional constipation is a type of functional bowel disorder characterized by difficult defecation with a sense of incomplete evacuation. It is a common disorder with an increasing prevalence, and the underlying cause is poorly identified. Nonpharmacological management of functional constipation includes lifestyle and dietary modification, regular physical activity, advice about toileting posture, and behavioral therapy. Biofeedback training as part of the behavioral training showed great efficacy with long-term results. Spinal magnetic stimulation is the application of extracorporeal magnetic stimuli to the spinal nerves and deep pelvic muscles to enhance bowel evacuation without surgical drawbacks. This study was designed to enhance bowel elimination in functional constipation patients through the dual effect of biofeedback and spinal magnetic stimulation. This work aimed to study the efficacy of spinal magnetic stimulation and biofeedback training versus biofeedback alone in the management of functional constipation.ResultsThere was a statistically significant difference between before and after the intervention in both studied groups regarding the mean weekly spontaneous bowel movement, a Numerical Rating Scale for pain assessment, and the Patient Assessment of Constipation Quality of Life questionnaire. When comparing the two groups after the intervention, the spinal magnetic stimulation showed superiority in the mean weekly spontaneous bowel movement and manometric anal pressure at rest.ConclusionsSpinal magnetic stimulation in addition to biofeedback pelvic floor muscle training could increase the mean weekly complete spontaneous bowel movements and manometric anal pressure at rest in patients with functional constipation. It did not show any additive benefits in improving pain during defecation or patient quality of life.Trial registrationClinicalTrials.gov, 0305398. https://register.clinicaltrials.gov/prs/app/action/SelectProtocol?sid=S000BQ0H&selectaction=Edit&uid=U0004JW0&ts=2&cx=-xmnims

Exploring Pharmacological Treatments for Chronic Idiopathic Constipation in Adults: A Look Back to the Future

Despite great progress in pharmaceutical research, the medical treatment of chronic idiopathic constipation is far from ideal. The aim of the present article was to review literature data, focusing on poorly studied or commercially unavailable/unapproved drugs potentially useful for the treatment of chronic idiopathic constipation in adults. An extensive online literature search was conducted using the keywords "chronic constipation", "colon", "constipation", "drugs", "laxatives", and "treatment", in various combinations between January 1960 and December 2022. The literature search showed the presence of some drugs whose efficacy has only recently been demonstrated by modern investigations, and which are likely to be incorporated into future guidelines, of others that are proven effective and potentially effective on constipated patients but limited by small or relatively old studies, or by side effects which could be used in experienced hands, and of others that might be useful but lack a solid scientific background. Looking into the future for patients with chronic constipation might add some more tools to the therapeutic portfolio, especially for certain subgroups of these patients.

Association between dietary phosphorus intake and chronic constipation in adults: evidence from the National Health and Nutrition Examination Survey

BackgroundSeveral studies suggest a link between micronutrients and constipation. However, the relationship between constipation and phosphorus has rarely been examined. The main aim of this study was to investigate the association between changes in the prevalence of chronic constipation and dietary phosphorus intake among adult respondents of the National Health and Nutritional Examination Survey (NHANES).MethodsData were extracted from the NHANES database for the years 2005–2010. A total of 13,948 people were included in the analysis. Dietary information was collected using the respondents’ 24-h dietary records. We conducted multiple logistic regression analyses to examine the correlation between phosphorus intake and poor bowel movement. The primary and secondary outcomes was constipation defined by stool consistency and stool frequency, respectively.ResultsFollowing multi-variate adjustment in model III, a significant association between chronic constipation and each additional 0.1-g intake of dietary phosphorus (odds ratio [OR], 0.97; 95% confidence interval [CI], 0.95, 1.00; P = 0.034 for stool consistency vs. OR, 0.94; 95% CI, 0.90, 0.99; P = 0.027 for stool frequency) was observed. Following multi-variate adjustment in model III, OR values and 95% CI from the second to fourth quartiles compared to the first quartile (reference group) were 0.92 (0.66, 1.27), 0.73 (0.47, 1.13), and 0.39 (0.20, 0.76), respectively, using the stool frequency definition.ConclusionsThis study revealed a negative correlation between phosphorus intake and chronic constipation. This may be due to the fact that dietary phosphorus intake is associated with softer stools and increased stool frequency. Further studies in different settings should be considered to verify these findings.

Probiotics and synbiotics in chronic constipation in adults: a systematic review and meta-analysis of randomised controlled trials

Probiotics and synbiotics in chronic constipation in adults: a systematic review and meta-analysis of randomised controlled trials

The effect of food, vitamin or mineral supplements on chronic constipation in adults: a systematic review and meta-analysis of randomised controlled trials

The effect of food, vitamin or mineral supplements on chronic constipation in adults: a systematic review and meta-analysis of randomised controlled trials

Association between 19 Allergens and Chronic Constipation in Adults: NHANES 2005–2006

Introduction: There are increasing reports of a link between chronic constipation and allergies in children. However, similar epidemiological evidence is limited in the general adult population. Therefore, in this study, we attempted to assess the association between chronic constipation and allergy in adults aged ≥20 years in the USA. Methods: We established a logistic regression model to test the relationship between chronic constipation and 19 specific immunoglobulin E (sIgE) types in adults aged ≥20 years using large-sample data from the National Health and Nutrition Examination Survey database (2005–2006). The weekly defecation times of the allergic and non-allergic groups were compared using the t test. Results: We found that sIgE-sensitized participants had a 0.723 lower risk of chronic constipation than the general population (95% confidence interval (CI) = 0.566–0.923). There was a negative association between chronic constipation and sensitizations to peanut (odds ratio (OR) = 0.579, 95% CI = 0.381–0.935), egg (OR = 0.335, 95% CI = 0.134–0.838), dog (OR = 0.723, 95% CI = 0.522–0.965), and cockroach (OR = 0.540, 95% CI = 0.373–0.784). In addition, the frequency of defecation per week increased significantly in people allergic to peanuts and cockroaches (p < 0.05). Discussion/Conclusion: The results of this study demonstrate an inverse relationship between sIgE sensitization and chronic constipation in adults. However, the specific association mechanism needs to be further studied.