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A controlled, randomized, double-blind trial to evaluate the effect of a supplement of cocoa husk that is rich in dietary fiber on colonic transit in constipated pediatric patients.

OBJECTIVE: Although a diet that is rich in fiber is widely recommended for preventing and treating constipation, the efficacy of fiber supplements have not been tested sufficiently in children. Our aim with this pilot study was to evaluate if fiber supplementation is beneficial for the treatment of children with idiopathic chronic constipation. METHODS: Using a parallel, randomized, double-blind, controlled trial, we conducted an interventional study to evaluate the efficacy of a supplement of cocoa husk rich in dietary fiber on intestinal transit time and other indices of constipation in children with constipation. After screening, the patients were randomly allocated to receive, for a period of 4 weeks, either a cocoa husk supplement or placebo plus standardized toilet training procedures. Before and after 4 weeks of treatment, we (1) performed anthropometry, a physical examination, and routine laboratory measurements, (2) determined total and segmental colonic transit time, (3) evaluated bowel movement habits and stool consistency using a diary, and (4) received a subjective evaluation from the parents regarding the efficacy of the treatment. The main variable for verifying the efficacy of the treatment was the total colonic transit time. RESULTS: Fifty-six chronically constipated children were randomly assigned into the study, but only 48 children completed it. These children, who were aged between 3 and 10 years, had a diagnosis of chronic idiopathic constipation. With respect to total, partial colon, and rectum transit time, there seemed to be a trend, although statistically nonsignificant, toward faster transit times in the cocoa husk group than in the placebo group. When we analyzed the evolution of the intestinal transit time throughout the study of children whose total basal intestinal transit time was > 50th percentile, significant differences were observed between the groups. The total transit time decreased by 45.4 +/- 38.4 hours in the cocoa husk group and by 8.7 +/- 28.9 hours in the placebo group (-38.1 hours). In the case of the right colon, changes in transit time also were significant between groups. Mean changes tended toward faster transit times in the left colon and the rectum, although the differences were not statistically significant. The children who received cocoa husk supplements tended to increase the number of bowel movements by more than that of the children of the placebo group. We also observed a reduction in the percentage of patients who reported hard stools (hard scybalous or pebble-like stools), although this reduction was significantly greater in the cocoa husk group. At the end of the intervention, 41.7% and 75.0% of the patients who received cocoa husk supplementation or placebo, respectively, reported having hard stools. Moreover, a significantly higher number of children (or their parents) reported a subjective improvement in stool consistency. No significant adverse effects were reported during the study. CONCLUSIONS: This study confirms the beneficial effect of a supplement of cocoa husk that is rich in dietary fiber on chronic idiopathic constipation in children. These benefits seem to be more evident in pediatric constipated patients with slow colonic transit time.

Cacao↗

[Fiber and nutrients intake in children with chronic constipation].

OBJECTIVES: The aim of this case-control study was to evaluate the intake of fiber alimentary and macronutrients in constipated children. METHODS: Fifty-four children (aged 2-12 yr) with diagnosis of chronic functional constipation were investigated at the Pediatric Hospital, "Universidade Federal do Rio Grande do Norte", Natal, RN, Brazil. They were age and sex matched with 50 patients without constipation. A standard questionnaire was applied to both groups and a 3 day dietary record was analyzed by computer software. RESULTS: The mean age at onset of symptoms was 29,0 +/- 26,1 months. There was not sex predominance and no difference about nutritional condition between the groups. Constipated children ate less fiber, proteins, lipids, carbohydrates and less caloric and protein adequated percentuals. The proportion of children who ate less dietary fiber than recommended (age + 5 g /day) was greater in the constipated group (83,3%) than in controls (66,6%); odds ratio 2,6. CONCLUSION: Constipated children ate less fiber and macronutrients than children without constipation. Intake of dietary fiber below the minimum recommendation is a risk factor for chronic functional constipation in children.

Case-Control Studies↗

Treating chronic constipation : How should we interpret the recommendations?

Chronic constipation is a multisymptom gastrointestinal motility disorder that negatively impacts the lives of those affected. New recommendations on diagnosing and treating this condition have recently been published. This review aims to assist clinicians in applying these recommendations in clinical practice. Although lifestyle interventions and bulking agents help some patients with constipation, data are lacking to support their efficacy in those with chronic constipation. If empirical treatment of patients with chronic constipation fails, osmotic laxatives (e.g. lactulose and polyethylene glycol), a serotonin (5-HT4) receptor agonist (e.g. tegaserod) or a chloride channel activator (e.g. lubiprostone) can be considered. Osmotic laxatives, though effective at increasing stool frequency, are often associated with adverse effects such as bloating and diarrhoea and typically do not effectively relieve the multiple symptoms of chronic constipation. Use of tegaserod and the recently approved lubiprostone is supported by high-quality evidence, and these agents have acceptable safety profiles in patients with chronic constipation. Recent advances in the definition of chronic constipation and in its pharmacological management have led to refinements in identifying the appropriate treatment needs of patients with this condition. It is hoped that these advancements will help clinicians select effective medical regimens for patients with chronic constipation.

Chronic Disease↗

Colectomy for severe slow-transit constipation in strictly selected patients.

BACKGROUND: Colectomy for severe constipation has in up to 25% of patients given unsatisfactory results. Failure to cure constipation is in most patients due to rectal dysfunction. The aim of the present study was to evaluate the effect of colectomy in a group of patients who fulfil all the criteria which, with our present knowledge, should predict a favourable result. METHODS: Twelve patients with long-standing severe constipation incurable by dietary regulation and medical treatment with demonstrable slow-transit constipation and normal rectal function entered the study. RESULTS: Ten patients were relieved of their constipation. Two patients continued to be constipated after subtotal colectomy. One had a very highly compliant rectum (preoperatively) with a maximal tolerable volume of 700 ml but normal emptying at defecography and normal emptying of viscous fluid. The patient was subsequently treated with proctectomy and ileo-pouch-anal anastomosis with satisfactory result. One patient with opioid abuse due to abdominal pain was improved by the operation but was still constipated. The opioid abuse continued, however, after the operation owing to continuing abdominal pain. A further three patients complained of abdominal pain, and two developed diarrhoea, one of whom became incontinent. CONCLUSION: Subtotal or segmental colectomy should be considered in a small number of patients with severe constipation provided strict criteria are fulfilled. Excessively high rectal volume tolerability may in spite of normal emptying capacity indicate the risk of development of rectal inertia postoperatively and may be a contraindication for surgery.

Adult↗

Quality of life in patients with different types of functional constipation.

BACKGROUND: Little information is available about the health-related quality of life (QoL) in patients with different types of chronic constipation. METHODS: We used two self-administered questionnaires, the Psychological General Well-Being (PGWB) index and the Gastrointestinal Symptom Rating Scale (GSRS) to assess QoL and gastrointestinal symptoms in 102 consecutive patients with chronic constipation. The type of constipation was determined from transit time, electrophysiologic investigation of sphincter function, anorectal manometry, and defecography. RESULTS: Overall, our patients with constipation reported low scores for general well-being (mean score, 85.5, compared with 102.9 in a healthy population). Patients with normal-transit constipation (n = 49) reported considerably lower scores in the PGWB than those with slow-transit constipation (n = 35). The symptoms increased frequency of defecation, loose stools, and urgent need for defecation were commoner in normal-transit constipation, which indicates that this group may have a relation to the irritable bowel syndrome. The overall PGWB index was strongly correlated with the total GSRS (P < 0.001). CONCLUSIONS: The general well-being of patients with chronic constipation is lower than that of a comparable normal population. Symptom severity correlates negatively with perceived quality of life.

Adolescent↗

[Idiopathic constipation in children: 10-year experience].

Constipation is a frequent clinical disorder in pediatric age and it is often difficult to resolve without a suitable diagnostic and therapeutic approach. Parents and pediatrician often underestimate this pathology, reaching the specialist only when it has already shown its complications. In the Department of Pediatric Surgery of Siena, in the last 10 years, we have activated a study centre on constipation in the pediatric age and we have developed a diagnostic and therapeutic protocol to give indications on the type of constipation and the consequent therapy. The Authors report their experience on 174 children with chronic constipation. The patients underwent a scintigraphic colonic transit time evaluation by radionuclides, an enema and an anorectal manometry. Such examinations were able to divide patients into two groups: with colonic and rectal constipation. The management consisted in common dietetic, behavioural and pharmacological treatment at first and then of specific treatment (biofeedback, prokinetic, emicolectomy), according to the type. The follow up showed recovery or improvement in 83.53% cases, unchanged clinical condition in 8.57%, aggravation in 1.9%. The Authors conclude emphasising the importance of diagnostic techniques that allow to frame correctly the pediatric patient affected by constipation. Particularly the anorectal manometry can be considered a first level examination, able to identify rectal constipation; together with scintigraphic colonic transit time that individualizes colonic constipation. The right diagnosis will be able to give a suitable therapeutic treatment.

Adolescent↗

Substance P in rectal mucosa of children with chronic constipation.

Substance P content was determined by radioimmunoassay in rectal mucosa of 17 children with idiopathic constipation and 9 with normal bowel movements who were used as controls. In children with chronic idiopathic constipation, rectal mucosa substance P levels were lower than levels in the control group: 47.6 +/- 11 vs. 79.4 +/- 11 pg/mg net weight respectively (differences not statistically significant). Substance P levels in rectal mucosa of children with soiling (11/17) did not differ from those of chronically constipated children without soiling (46.0 +/- 16 vs. 50.5 +/- 19 pg/mg net weight). In children with constipation, substance P levels did not correlate either with age or duration of symptoms. Substance P levels in normal controls were similar to levels previously observed in non-constipated adults, whereas levels in constipated children were intermediate between levels observed in healthy subjects and levels in adults with chronic constipation. These findings may point to a motility derangement as a possible factor in the pathogenesis of chronic constipation in childhood.

Case-Control Studies↗

[The epidemiology of irritable bowel syndrome and functional constipation of Guangzhou residents].

OBJECTIVE: To investigate the prevalence rates of irritable bowel syndrome (IBS) and functional constipation in Guangzhou City. METHODS: A structured history using a questionnaire on gastrointestinal symptoms during the preceding one year was obtained from random sampling 2,892 residents, 1,006 consecutively patients who visited general practitioner and 495 consecutively patients who visited gastroenterologists. All the questionnaires were filled by trained doctors. RESULTS: The overall prevalence rates of irritable bowel syndrome and functional constipation in Guangzhou City were 5.6% and 3.0%. There were 10.1%, 34.3% and 5.4%, 4.8% visitors who complained IBS and functional constipation in the general internal outpatient department and gastrointestinal outpatient department. The female was predominant in both IBS and functional constipation. The ratio of male to female was 1:1.51 and 1:1.77. With the increase of age, the prevalence rate of functional constipation rose; but IBS did not. There were 23.9% IBS patients and 17.6% functional constipation patients who had ever seen a doctor for these diseases in the community. The percentages of IBS subclasses were as the following: diarrhea predominant: 63.2%; constipation predominant: 27.0%; others: 9.8%. CONCLUSION: The prevalence rates of IBS and functional constipation in Guangzhou City were lower than that in west countries.

Adolescent↗

Regulation of the enteric nervous system in the colon of patients with slow transit constipation.

BACKGROUND/AIMS: The cause of impaired motility in patients with slow transit constipation is unknown. To clarify the physiological significance of cholinergic, adrenergic, non-adrenergic non-cholinergic inhibitory nerves in the colon of patients with slow transit constipation, we investigated the enteric nerve responses on lesional and normal bowel segments derived from patients with slow transit constipation and patients who underwent colon resection for colonic cancers. METHODOLOGY: Twenty preparations were taken from the lesional colon of 6 patients with slow transit constipation (2 men and 4 women, aged 23 to 68 years, with a mean age of 44.0 years). Thirty-six preparations were taken from the normal colon of 12 patients with colonic cancer (6 men and 6 women, aged 40 to 60 years, with a mean age of 52.2 years). A mechanographic technique was used to evaluate in vitro muscle responses to acetylcholine, adrenalin, electrical field stimulation of adrenergic and cholinergic nerves before and after treatment with various autonomic nerve blockers. RESULTS: The contraction reaction to acetylcholine in the colon with slow transit constipation was significantly weaker than in the normal colon (P < 0.01). The relaxation reaction to adrenalin in the colon with slow transit constipation was stronger than in the normal colon. The colon with slow transit constipation was more strongly innervated by non-adrenergic non-cholinergic inhibitory nerves than the normal colon, significantly (P < 0.05). CONCLUSIONS: These findings suggest that a decrease of cholinergic nerve and an increase of non-adrenergic non-cholinergic inhibitory nerve play an important role in the impaired motility observed in the colon of patients with slow transit constipation.

Acetylcholine↗

Differential therapy of constipation--a review.

Constipation is a common condition occurring with increasing frequency in advanced age. As a symptom, it is not always dealt with directly by the physician, but is often left to the care of nurses. Many patients rely on self-medication. Constipation not only interferes with the quality of life, but often has the rank of a syndrome requiring competent medical intervention. This is of clinical importance, because a thorough understanding of the pathophysiology of constipation enables the clinician to identify the potential causes and, if necessary, initiate a differentiated therapy with the aid of only simple additional investigations. This review outlines a clinical approach including medical history, spectrum of causes, radiopaque pellets method to differentiate between slow transit constipation and defecation disturbances for the differential diagnosis of constipation. The mechanisms of action of laxatives (anti-absorptive, secretagogue, osmotic, filling and swelling agents) are further components and important for the individual therapy. Based on this fundamental information, a differentiated therapy is possible in each specific case such as coprostasis. Chronic symptomatic constipation reduces the quality of life and should be evaluated by physicians. If situations such as drug-induced constipation or hypothyroidism which have to be treated causally can be ruled out, laxative treatment according to the clinical picture, mode of action of drug used and side effects of the laxative can be initiated. Laxative abuse due to chronic constipation is rare and almost always associated with psychosomatic-psychiatric disorders.

Cathartics↗

[Scintigraphic assessment of the anorectal function in children with idiopathic constipation].

OBJECTIVE: The ability of the rectum to evacuate is valuable information in patients with constipation, or those who find defecation difficult. However, few published studies are available to evaluate this ability in most common examinations of anorectal function. A new, low-radiation, real-time scintigraphic technique has been used by several investigators to outline the 'neo-rectum' following ileoanal pouch anastomosis and the efficiency of rectal evacuation in adult patients with constipation. There was no similar report about the abilities of rectal evacuation in children with constipation. The aim of this study was to investigate the value and reliability of isotope defecography as an objective method for evaluation of anorectal function in patients with chronic idiopathic constipation. METHODS: Twenty five patients (10 were male and 15 were female, range of age was 5 - 15 years, mean age 8.99 years) suffering from chronic idiopathic constipation and 11 normal children were assessed by isotope defecography. The radiopharmaceuticals used were rehydrated potato labelled with 200 MBq (99m)TcO(4)(-). The volume of the potato paste used in each subject was determined by prior balloon proctometrogram studies, which measured the maximum rectal capacity. The patient was seated upright on a commode, and the computer was then set for the dynamic acquisition of 3-second images over 5 min per session. Using a region of interest program on computer, the dynamic radioactivity in anorectum during defecation showed as emptying curves by computer. The half defecation time, the rectal emptying rate and the residual rate could be calculated from the rectal emptying curves. The anorectal angles were measured from the images of anorectum during resting, squeezing and evacuation. All patients underwent X-ray defecography and colonic transit time measurement simultaneously. RESULTS: The rectal emptying curves showed a prompt evacuation in normal children, but it disappeared in most of patients with idiopathic constipation. The abilities of evacuation were damaged severely in patients. In normal group the half defecation time, the rectal emptying rate and the residual rate were 1.97 +/- 0.86 minutes, 78.30% +/- 12.03% and 20.50% +/- 7.67%, respectively, whereas they were 15.16 +/- 3.67 minutes, 44.84% +/- 14.00% and 53.52% +/- 15.02%, respectively, in patients group. There were significant differences between two groups (P < 0.05). According to the results of colonic transit time there were 6 patients with slow transit constipation, 17 patients with outlet dysfunction and 2 patients with normal colonic transit time. The abilities of evacuation were more seriously impaired in patients with outlet dysfunction compared with those patients with slow transit constipation. For the isotope defecography the mean anorectal angles at resting in patient group and normal group were 109 +/- 12 degrees and 101 +/- 17 degrees. There were no significant differences in anorectal angles between patient group and normal group or by both methods of isotope defecography and X-ray defecography. The correlation coefficients for anorectal angles at resting, squeezing and evacuation were 0.87, 0.82 and 0.73, respectively. CONCLUSION: The isotope defecography can be used to evaluate the anorectal function and the ability of defecation dynamically, also it was simple and safe because of the low dose radiation involved.

Adolescent↗

[Effect of ear mushroom (Auricularia) on functional constipation].

BACKGROUND/AIMS: Constipation is one of the most prevalent gastrointestinal complaints. High fiber intake is recommended as an initial therapy for constipation. Ear mushroom is known to have higher fiber contents about 50% than other mushroom. The aim of this study was to evaluate the effect of fiber supplements using ear mushrooms on the improvement of functional constipation. METHODS: We conducted a double blind study with 3 groups (placebo, ear mushrooms alone, and ear mushrooms with additives including cascara sagrada, etc.), which were randomly assigned out of 34 patients with functional constipation, defined by modified Rome II criteria. Number of bowel movement, straining, sense of incomplete evacuation, stool consistency, satisfactory relief, abdominal pain/discomfort and colon transit time were evaluated and analyzed before, during and after the treatment. RESULTS: Both ear mushrooms alone and ear mushrooms with additives significantly improved number of bowel movement, straining, sense of incomplete evacuation, stool consistency and satisfactory relief in patients with functional chronic constipation (p<0.05). Although the use of ear mushrooms with additives was found to be more effective on the improvement of constipation than ear mushrooms alone, it may induce abdominal discomfort or pain. CONCLUSIONS: In patients with functional constipation, fiber supplements using ear mushrooms significantly improved constipation related symptoms without serious side effect.

Adult↗

Evaluation and treatment of constipation in infants and children.

Constipation in children usually is functional and the result of stool retention. However, family physicians must be alert for red flags that may indicate the presence of an uncommon but serious organic cause of constipation, such as Hirschsprung's disease (congenital aganglionic megacolon), pseudo-obstruction, spinal cord abnormality, hypothyroidism, diabetes insipidus, cystic fibrosis, gluten enteropathy, or congenital anorectal malformation. Treatment of functional constipation involves disimpaction using oral or rectal medication. Polyethylene glycol is effective and well tolerated, but a number of alternatives are available. After disimpaction, a maintenance program may be required for months to years because relapse of functional constipation is common. Maintenance medications include mineral oil, lactulose, milk of magnesia, polyethylene glycol powder, and sorbitol. Education of the family and, when possible, the child is instrumental in improving functional constipation. Behavioral education improves response to treatment; biofeedback training does not. Because cow's milk may promote constipation in some children, a trial of withholding milk may be considered. Adding fiber to the diet may improve constipation. Despite treatment, only 50 to 70 percent of children with functional constipation demonstrate long-term improvement.

Child↗

The constipated serviceman: prevalence among deployed U.S. troops.

The prevalence of constipation in deployed servicemen was determined in a sample of military personnel aboard the USS Iwo Jima LPH 2 during Operation Desert Shield. Results were obtained from a bowel function questionnaire issued to 500 deployed marines and sailors. When constipation is defined as no bowel movement for greater than 3 days, 3.9% of the Marine/sailor personnel are constipated when in their home environment as compared to 6.0% when they are aboard ship and 30.2% while in the field. Alternatively, when constipation is defined as the presence of certain anorectal complaints (hard stools, straining, painful defecation, and bleeding with defecation), the incidence is 7.2% when at home as compared to 10.4% aboard ship and 34.1% in the field. These results confirm that whether constipation is defined as infrequent bowel movements or presence of symptoms of constipation, significantly more servicemen will be constipated when in the field as compared to their home environment. Since approximately one-third of Navy/Marine Corps personnel deployed in a field environment will be constipated, preventive measures ought to be evaluated.

Adolescent↗

Constipation in children.

Constipation is a common childhood condition, estimated to occur in 5 to 10 percent of children. In most cases, the cause is functional. However, constipation may occasionally indicate a significant organic disorder, which can usually be determined by a thorough history and physical examination. Constipation that is present from birth or that begins in the neonatal period is most likely to be congenital in origin. Acute constipation usually has an organic cause, while chronic constipation usually has a functional cause. Failure to thrive and gross distention of the abdomen suggest the diagnosis of Hirschsprung's disease. Rectal examination of a child with constipation usually reveals a distended rectum that is full of stool. In patients with Hirschsprung's disease, the rectum is usually empty and tight. Laboratory investigations are usually not necessary in patients with mild constipation. Treatment should be directed at the underlying cause. Functional constipation can be managed by changes in diet, regular bowel habits and, if necessary, pharmacologic therapy and biofeedback training.

Cathartics↗

[Severe chronic constipation: limitations of medical therapy and indications for surgical intervention (diagnostic and therapeutic). I].

The great majority of children referred to Pediatric Gastroenterologic Units for chronic constipation have a functional disorder and do not require investigative techniques, since functional constipation is easily recognized an anamnestic and clinical basis. Severe chronic constipation indicates a chronic condition believed to be of functional type but unresponsive to the traditional pharmacologic treatment. However, several clinical features might suggest an organic type of constipation during the initial diagnostic approach: growth failure, distension, episodes of diarrhea intermingled with constipation, subocclusive events, dilatation of areas of the gut (megaduodenum, megajejunum) at x-ray examination of the entire gastrointestinal tract. Hirschsprung's disease is the best known organic type of constipation; however, there are other neurogenic and myogenic abnormalities of the colonic (and/or ileal) tract that mimick Hirschsprung's disease and represent development abnormalities of the enteric nervous plexus. Other organic types of constipation are due to systemic diseases, endocrine and metabolic disorders, central nervous system disorders. Organic constipation usually requires extensive investigative approach, including pathologic examination of enteric nervous plexus on full thickness biopsies.

Child↗

Gastric emptying in patients with constipation following childbirth and due to idiopathic slow transit.

BACKGROUND: Idiopathic slow transit constipation (ISTC) is considered to be a heterogeneous condition in which patients have varying sites and degrees of delayed gastrointestinal transit. The majority of patients have pancolonic disease, and colectomy with ileocolorectal anastomosis has been the mainstay of surgical treatment. Severe constipation following traumatic childbirth is now being recognized and this subgroup of patients may have delayed transit confined to the rectosigmoid colon. In theory, proximal transit in these patients should be normal. METHODS: Gastric emptying was studied in patients with constipation following childbirth or ISTC and in controls. After an overnight fast, both patients and controls received breakfast, which consisted of cornflakes, sugar and milk. The liquid marker 111In-labelled di-ethylene tri-amine penta-acetic acid (DTPA) was added to the milk. A solid marker, 99mTc-labelled colloid, was impregnated on to paper and sealed with cellulose. The t1/2 for gastric emptying was calculated. RESULTS: Liquid phase emptying was normal in both constipation following childbirth and ISTC. Solid phase emptying was delayed significantly in ISTC compared with that in patients with constipation following childbirth and controls. In addition, half the patients with ISTC had delayed transit through the small bowel and proximal colon. Small bowel and colonic transit were normal in patients with constipation following childbirth. CONCLUSION: Patients with constipation following childbirth represent a distinct subgroup with normal proximal gastrointestinal function. Gastric emptying studies may be helpful in selecting patients for surgical management of severe constipation.

Adult↗

[Constipation]

OBJECTIVE: To review current information concerning the importance, pathophysiology, clinical presentation, and treatment of chronic constipation in Pediatrics. METHODS: Bibliographic review of Medline database and articles published by the authors. RESULTS: Constipation is a common disorder in childhood. The pathophysiology of constipation involves the interaction of several factors: low-fiber diet, early weaning, painful bowel movement, fecal retention, disturbance of intestinal motility, and genetic predisposition. The clinical presentation of children with constipation is variable. Several patients present the onset of constipation during the 1st year of life; however, the medical treatment is usually initiated only after a long period. Some patients are recognized due to the presence of complications, such as soiling, abdominal pain, and urinary abnormalities. The treatment should be adapted to each patient, and includes general orientation, complete colonic emptying, maintenance treatment, and a behavioral program to regulate bowel habits. Regardless of the fact that most children present functional chronic constipation, much attention should given to the entities that constitute the differential diagnosis. Specialized evaluation and diagnostic techniques should be indicated according to the patient s individual characteristics and when the clinical evolution is not satisfactory. CONCLUSIONS: The long-term control of chronic constipation depends on the acquisition of dietary habits that provide an adequate intake of dietary fiber. It is possible that a high-fiber diet is important not only to the control of constipation, but may also reduce the risk for diet-related chronic diseases during adulthood.

Journal Article↗