Abstract
Frequently and persistently raised glucose level causes numerous complications. So it is important to find out a component of diet that can improve glucose homeostasis after ingestion of food without causing any side effect or complication. The aim of this randomized controlled clinical trial study was to verify the effect of dietary fiber on postprandial blood sugar (PPBS). The study was carried out in a sample of fifty healthy adult subjects at the Department Physiology of Rajshahi Medical College during the period from January 2014 to December 2014. Fasting blood sugar of the subjects was estimated before ingestion of identical glucose drink with or without dietary fiber (ispaghula husk) and PPBS was measured at 30, 60 and 120 min after the drink. The mean plasma glucose concentrations after a 50 gm oral glucose load significantly (p < 0.05, p < 0.001) decreased at 30, 60 and 120 min in both condition with dietary fiber and without dietary fiber. The mean plasma postprandial glucose concentration in condition with dietary fiber was significantly (p < 0.001) lower than the corresponding value without dietary fiber. The study suggests that ingestion of water soluble dietary fiber along with glucose drink reduces sharp rise as well as sustained rise of postprandial glucose.
 Mediscope Vol. 6, No. 1: Jan 2019, Page 25-29
Highlights
Glucose is the only nutrient that normally can be used by the brain, retina and germinal epithelium of the gonads in sufficient quantities to supply them optimally with their required energy
The mean plasma postprandial glucose concentration in condition with dietary fiber was significantly lower than the corresponding value without dietary fiber
We found that the dietary fiber significantly reduced the postprandial blood sugar (PPBS) even two hours after glucose drink
Summary
Glucose is the only nutrient that normally can be used by the brain, retina and germinal epithelium of the gonads in sufficient quantities to supply them optimally with their required energy. It is important to maintain the blood glucose concentration at a sufficiently high level to provide this necessary nutrition. Long term increase in blood glucose may cause damage to many tissues, especially to blood vessels. Soluble dietary fibers are plant foods such as legumes, oat, barley, some fruits, vegetables, psyllium seed husk, nuts, almonds, etc.[2] Hlebowicz et al failed to find out any effect of dietary fiber on postprandial blood sugar (PPBS).[3] On the contrary, Johansson et al and Nilsson et al stated that ingestion of resistant starch reduced the PPBS during the course of the entire experimental day.[4,5] Karhunen et al noted that the addition of soluble dietary fiber to the test
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