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VEZELTEST

Geplaatst: zo aug 19, 2007 7:33 pm
door Willy
Meld je hier als je wilt mee doen met de psylium vezeltest

Geplaatst: ma aug 20, 2007 11:03 am
door theodorus
Hoi Willy,

Mij heb je, doe graag mee,

groet
Theo

vezeltest

Geplaatst: ma aug 20, 2007 11:50 am
door Fredh
Ik wil graag meedoen.

Geplaatst: ma aug 20, 2007 12:55 pm
door Willy
Prima!! Hoop dat er nog een paar mee doen.

In de onderstaande berichten lees je het wetenschappelijke onderzoek waarom ik een proef wil doen met psylium

Geplaatst: ma aug 20, 2007 12:57 pm
door Willy
7.7.1.2.1 Bloedsuiker stabilisatie

Effect of psyllium on gastric emptying, hunger feeling and food intake in normal volunteers: a double blind st

OBJECTIVE: To assess whether psyllium, a soluble dietary fibre, could, at an acceptable dose (7.4 g), delay gastric emptying of a low-calorie meal, and reduce hunger feeling and energy intake, without requiring intimate mixing with the meal. DESIGN: A double blind randomized cross over study with 14 normal volunteers, to evaluate the effect of this dose of psyllium on postprandial serum glucose, triglycerides and insulin levels, and on gastric fullness, hunger feeling and food intake. METHODS: Gastric emptying was measured using a standard double-radiolabeled 450 kcal meal and feelings by visual analogic scales. The postprandial serum glucose, triglycerides and insulin levels were also determined. RESULTS: No delay in the gastric emptying of the solid and liquid phases of the meal was observed with psyllium. After the meal, hunger feelings and energy intake were significantly lower during the psyllium session than during the placebo session (13% and 17% lower respectively; P < 0.05). Postprandial increase in serum glucose, triglycerides and insulin levels was less with psyllium than with placebo (P < 0.05). CONCLUSIONS: Psyllium reduces hunger feelings and energy intake in normal volunteers at reasonable dose and without requiring mixing with the meal. It does not act by slowing down the gastric emptying of hydrosoluble nutrients, but by increase in the time allowed for intestinal absorption, as suggested by the flattening of the postprandial serum glucose, insulin and triglycerides curves.

http://www.ncbi.nlm.nih.gov/entrez/quer ... bmed_docsu

Dietary fibre, glycaemic response, and diabetes

The much publicised global trend in rising levels of obesity and diabetes has refuelled interest in the dietary intake of the macronutrients (fat, protein, and carbohydrates) necessary to maintain the state of normalcy (good health) of an individual. Both scientific and public attention have focused on the dietary mediation of chronic health syndromes, either through use of dietary supplements, or a review of the whole diet situation. Dietary supplements have been used extensively both as pharmacological supplements, food ingredients, in processed foods to aid weight control, and the regulation of glucose control for diabetic patients. Particular interest has focused on the use of dietary fibres, especially soluble dietary fibres (such as guar gum, locust bean gum, and psyllium fibres), resistant starch, and slowly digestible carbohydrates. These have been shown to alter food structure, texture, and viscosity, and hence the rate of starch degradation during digestion. Research has also illustrated an association between the rate of carbohydrate degradation during digestion, and the regulation of postprandial blood sugar and insulin levels. The current paper explores the potential use of dietary fibres in the treatment of obesity and diabetes.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Involvement of small intestinal motility in blood glucose response to dietary fibre in man

Three dietary fibres with different physicochemical properties were studied in healthy humans for their effects on small intestinal motility and postprandial hyperglycaemia. Duodeno-jejunal motor activity was evaluated electromyographically for 180 min in six subjects who had ingested a test meal composed of glucose alone or glucose with 15 g of wheat bran (WB), sugar beet (SB) or ispaghula (I) fibres. Glucose and insulin concentrations were determined during the same period. Each subject received each of the four test meals randomly during a 4 d period. Addition of SB or I to the glucose meal altered duodeno-jejunal motility. Both of these fibres inhibited stationary contractile activity and increased the propagation length and velocity of propagated activity, whereas addition of WB had no effect. These results could reflect the high water-holding capacity of SB and I. Blood glycaemic response to the glucose meal was reduced by SB and I but remained unchanged with WB. Postprandial blood glucose levels were significantly correlated with the total motility index (r 0.82) and stationary activity (r 0.79). Taken together, these observations suggest that the contractile activity induced by dietary fibre in the small intestine probably plays a major role in delayed glucose absorption.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Psyllium fibre and the metabolic control of obese children and adolescents

In children and adolescents from developed countries, obesity prevalence has strongly increased in the last decades and insulin resistance and impaired glucose tolerance are frequently observed. Some dietary components such as low glycemic index foods and dietary fibre could be used in order to improve glucose homeostasis in these children. Psyllium or ispaghula husk (the husk of the seeds of Plantago ovata) is a mixture of neutral and acid polysaccharides containing galacturonic acid with a ratio of soluble/insoluble fibre of 70/30. Some foods could potentially be enriched with psyllium, like breads, breakfast cereals, pasta and snack foods. The aim of this review was to assess the usefulness of psyllium in the management of obese children and adolescents with abnormalities of carbohydrate and lipid metabolism. After psyllium supplementation, the percentage change in postprandial glucose in type 2 diabetes patients, ranged from -12.2 to -20.2%. In hypercholesterolemic children, the effect of psyllium in LDL-cholesterol serum concentrations ranged from 2.78 to -22.8%; the effect in HDL-cholesterol from -4.16 to 3.05%; and the effect on triglycerides from 8.49 to -19.54%. The reviewed evidence seems to show that psyllium improves glucose homeostasis and the lipid and lipoprotein profile; however, more well controlled trials and further studies are needed to clarify it's effects and the mechanisms involved.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Effects of psyllium on glucose and serum lipid responses in men with type 2 diabetes and hypercholesterolemia

BACKGROUND: Water-soluble dietary fibers decrease postprandial glucose concentrations and decrease serum cholesterol concentrations. This study examined the effects of administering psyllium to men with type 2 diabetes. OBJECTIVE: The objective was to evaluate the safety and effectiveness of psyllium husk fiber used adjunctively to a traditional diet for diabetes in the treatment of men with type 2 diabetes and mild-to-moderate hypercholesterolemia. DESIGN: After a 2-wk dietary stabilization phase, 34 men with type 2 diabetes and mild-to-moderate hypercholesterolemia were randomly assigned to receive 5.1 g psyllium or cellulose placebo twice daily for 8 wk. Serum lipid and glycemic indexes were evaluated biweekly on an outpatient basis and at weeks 0 and 8 in a metabolic ward. RESULTS: In the metabolic ward, the psyllium group showed significant improvements in glucose and lipid values compared with the placebo group. Serum total and LDL-cholesterol concentrations were 8.9% (P < 0.05) and 13.0% (P = 0.07) lower, respectively, in the psyllium than in the placebo group. All-day and postlunch postprandial glucose concentrations were 11.0% (P < 0.05) and 19.2% (P < 0.01) lower in the psyllium than in the placebo group. Both products were well tolerated, with no serious adverse events related to treatment reported in either group. CONCLUSION: The addition of psyllium to a traditional diet for persons with diabetes is safe, is well tolerated, and improves glycemic and lipid control in men with type 2 diabetes and hypercholesterolemia.

http://www.ajcn.org/cgi/content/full/70/4/466

Psyllium decreased serum glucose and glycosylated hemoglobin significantly in diabetic outpatients

Psyllium is a bulk-forming laxative and is high in both fiber and mucilage. The beneficial effect of dietary fiber in the management of type II diabetes, has not been totally demonstrated. The purpose of this study was to determine the plasma-lowering effects of 5.1g b.i.d. of psyllium husk fiber, as an adjunct to dietary and drug therapy on lipid and glucose levels, in patients with type II diabetes. Patients were randomly selected from an outpatient clinic of primary care to participate in a double-blind placebo-controlled study in which Plantago ovata Forsk., or placebo was given in combination with their anti-diabetic drugs. Forty-nine subjects were included in the study that were given diet counseling before the study and then followed for 8 weeks in the treatment period. Fasting plasma glucose (FBS) was measured every 2 weeks, and total plasma cholesterol (TC), LDL-cholesterol (LDL-C), HDL-cholesterol (HDL-C), triglyceride (TG), and insulin levels were measured every 4 weeks. Glycosylated hemoglobin (HbA1c) was also measured at the beginning and ending of the study. The test products (psyllium or placebo) were supplied to subjects in identically labeled foil packets containing a 5.1g dose of product, to consume two doses per day, half an hour before breakfast and dinner. Both products were well tolerated, with no serious adverse events related to treatment was reported in either. Better gastric tolerance to metformin was recorded in the psyllium group. FBS, and HbA1c, showed a significant reduction (p<0.05), whereas HDL-C increased significantly (p<0.05) following psyllium treatment. LDL/HDL ratio was significantly decreased (p<0.05). Our results show that 5.1g b.i.d. of psyllium for persons with type II diabetes is safe, well tolerated, and improves glycemic control.

http://www.ncbi.nlm.nih.gov/sites/entre ... stractPlus

Lowering glycemic index of food by acarbose and Plantago psyllium mucilage

BACKGROUND: A study was designed to evaluate the effect of acarbose and Plantago psyllium mucilage on glycemic index (GI) of bread. METHODS: Twelve patients with non-insulin-dependent diabetes mellitus (NIDDM) and ten healthy volunteers were studied. Three meal tests with an intake of 90 g of white bread (50 g of carbohydrates) were performed on each subject. In one test, 200 mg of acarbose was given, while 15 g of P. psyllium mucilage was given in another test, and only bread was ingested in the control test. Serum glucose and insulin concentrations were measured every 30 min from 0-180 min. Net area under curve (AUC) concentrations of glucose and insulin, GI and insulinic index were calculated. RESULTS: In NIDDM patients, AUC-glucose in the test with acarbose (1.9 +/- 0.7 mmol/L) and with P. psyllium (4.3 +/- 1.2 mmol/L) were significantly lower than in the control test (7.4 +/- 1.5 mmol/L) (p < 0.01). GI of bread plus acarbose was 26 +/- 13, and of bread plus P. psyllium, 59 +/- 10 (p < 0.05). AUC-insulin and insulinic index behave similarly. In healthy individuals, AUC-glucose and GI did not significantly change with the treatments; however, insulinic index with acarbose was 17 +/- 16, and with P. psyllium was 68 +/- 15 (p < 0.05). Acarbose or P. psyllium decreased GI of bread in NIDDM patients and diminished insulinic index in NIDDM and in healthy subjects. CONCLUSIONS: Adding acarbose or P. psyllium to meals may reduce glycemic index of carbohydrate foods and may help diabetic control.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Psyllium fiber reduces rise in postprandial glucose and insulin concentrations in patients with non-insulin-dependent diabetes

The ability of psyllium fiber to reduce postprandial serum glucose and insulin concentrations was studied in 18 non-insulin-dependent diabetic patients in a crossover design. Psyllium fiber or placebo was administered twice during each 15-h crossover phase, immediately before breakfast and dinner. No psyllium fiber or placebo was given at lunch, which allowed measurement of residual or second-meal effects. For meals eaten immediately after psyllium ingestion, maximum postprandial glucose elevation was reduced by 14% at breakfast and 20% at dinner relative to placebo. Postprandial serum insulin concentrations measured after breakfast were reduced by 12% relative to placebo. Second-meal effects after lunch showed a 31% reduction in postprandial glucose elevation relative to placebo. No significant differences in effects were noted between patients whose diabetes was controlled by diet alone and those whose diabetes was controlled by oral hypoglycemic drugs. Results indicate that psyllium as a meal supplement reduces proximate and second-meal postprandial glucose and insulin concentrations in non-insulin-dependent diabetics.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Geplaatst: ma aug 20, 2007 12:58 pm
door Willy
7.7.1.2.2 Vermindering hongergevoel

Effect of psyllium on gastric emptying, hunger feeling and food intake in normal volunteers: a double blind study

OBJECTIVE: To assess whether psyllium, a soluble dietary fibre, could, at an acceptable dose (7.4 g), delay gastric emptying of a low-calorie meal, and reduce hunger feeling and energy intake, without requiring intimate mixing with the meal. DESIGN: A double blind randomized cross over study with 14 normal volunteers, to evaluate the effect of this dose of psyllium on postprandial serum glucose, triglycerides and insulin levels, and on gastric fullness, hunger feeling and food intake. METHODS: Gastric emptying was measured using a standard double-radiolabeled 450 kcal meal and feelings by visual analogic scales. The postprandial serum glucose, triglycerides and insulin levels were also determined. RESULTS: No delay in the gastric emptying of the solid and liquid phases of the meal was observed with psyllium. After the meal, hunger feelings and energy intake were significantly lower during the psyllium session than during the placebo session (13% and 17% lower respectively; P < 0.05). Postprandial increase in serum glucose, triglycerides and insulin levels was less with psyllium than with placebo (P < 0.05). CONCLUSIONS: Psyllium reduces hunger feelings and energy intake in normal volunteers at reasonable dose and without requiring mixing with the meal. It does not act by slowing down the gastric emptying of hydrosoluble nutrients, but by increase in the time allowed for intestinal absorption, as suggested by the flattening of the postprandial serum glucose, insulin and triglycerides curves.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Correlation between echographic gastric emptying and appetite: influence of psyllium

The correlation between ultrasonographic gastric emptying and appetite was studied. Echographic evaluation of gastric emptying by measurement of the antral vertical diameter and assessment of sensations of hunger and satiety using analogue visual scales were performed simultaneously in 12 healthy volunteers. Measurements were carried out after the intake of 10.8 g psyllium or placebo in a randomised, crossover, double blind trial. The correlation between echographic gastric emptying and sensations of hunger and satiety was excellent (p < 0.001) after the intake of either psyllium or placebo. Psyllium significantly delayed gastric emptying from the third hour after a meal. It increased the sensation of satiety and decreased hunger at the sixth hour after the meal. The association between echographic measurement and visual scales is a simple method of evaluating the relationship between the stomach and appetite. The pharmacodynamic effect of psyllium should be confirmed by longterm therapeutic trials.

http://www.pubmedcentral.nih.gov/pagere ... ageindex=1

Geplaatst: ma aug 20, 2007 12:59 pm
door Willy
7.7.1.2.3 Cholesterol en hart en vaatziekten

Nutriceuticals in cardiovascular disease: psyllium

In recent years, there has been a growing interest in the use of dietary fiber in health maintenance and disease prevention. A deficiency of fiber in the Western diet may be contributing to the current epidemics of diabetes mellitus, coronary artery disease (CAD), and colonic cancer. The awareness of fiber as a dietary supplement may have contributed to the reported 30% decline in death rate from CAD observed over the past 15 years. Psyllium is a soluble gel-forming fiber that has been shown to bind to the bile acids in the gut and prevent their normal reabsorption, similar to the bile acid sequestrant drugs. Psyllium is useful as an adjunct to dietary therapy (step 1 or step 2 American Heart Association [AHA] diet) in the treatment of patients with mild-to-moderate hypercholesterolemia. In combination with other cholesterol-lowering drugs, such as statins, psyllium provides an added benefit on cholesterol lowering, and is well tolerated and cost-effective.

http://www.ncbi.nlm.nih.gov/sites/entre ... d_RVDocSum

Long-term cholesterol-lowering effects of psyllium as an adjunct to diet therapy in the treatment of hypercholesterolemia

BACKGROUND: Hypercholesterolemia is a major risk factor for coronary heart disease and nutrition management is the initial therapeutic approach. OBJECTIVE: This multicenter study evaluated the long-term effectiveness of psyllium husk fiber as an adjunct to diet in the treatment of persons with primary hypercholesterolemia. DESIGN: Men and women with hypercholesterolemia were recruited. After following an American Heart Association Step I diet for 8 wk (dietary adaptation phase), eligible subjects with serum LDL-cholesterol concentrations between 3.36 and 4.91 mmol/L were randomly assigned to receive either 5.1 g psyllium or a cellulose placebo twice daily for 26 wk while continuing diet therapy. RESULTS: Serum total and LDL-cholesterol concentrations were 4.7% and 6.7% lower in the psyllium group than in the placebo group after 24-26 wk (P < 0.001). Other outcome measures did not differ significantly between groups. CONCLUSIONS: Treatment with 5.1 g psyllium twice daily produces significant net reductions in serum total and LDL-cholesterol concentrations in men and women with primary hypercholesterolemia. Psyllium therapy is an effective adjunct to diet therapy and may provide an alternative to drug therapy for some patients.

http://www.ajcn.org/cgi/content/full/71/6/1433

Geplaatst: ma aug 20, 2007 2:35 pm
door Willy
zijn er vragen over deze onderzoeken?

Geplaatst: di aug 21, 2007 1:16 pm
door wvanleeu
Hallo Willy,
Mijn man wil ook graag mee doen.
Gr....Wil.

Geplaatst: di aug 21, 2007 1:19 pm
door Willy
Jullie zijn altijd welkom :lol:

Ik wacht nog even op wat meer reacties

Ik geef via dit draadje straks advies.

Het is de bedoeling dat je dan de resultaten, negatief of positief hier plaatst

vezeltest

Geplaatst: ma aug 27, 2007 3:13 pm
door mila
hallo Willy,

Ook ik doe graag mee aan de vezeltest. Ik gebruik al psyllium (colon clean) en neem 'sochtends en 's avonds een eetlepel. Dit vanwege prikkelbare darm.
Ik heb diabetes t2 en gebruik op t moment geen diabetesmedicatie omdat ik goede resultaten boek met een koolhydraatarm-dieet.

met vriendelijke groet, Mila

Geplaatst: ma aug 27, 2007 3:15 pm
door Renzonl
ik ben ook wel in voor een test

Geplaatst: ma aug 27, 2007 3:18 pm
door Willy
Welkom over een tijdje meer info

Abonneer op deze discussie zodat je een email allert krijgt

Geplaatst: ma aug 27, 2007 10:28 pm
door advana
Hoi Willy,

Ik doe graag mee,

Ad

Geplaatst: di aug 28, 2007 2:42 pm
door Willy
Welkom Ad.

Ik wacht nog even op de last minutes boekingen :lol: