Insights & Discussion
Adding oat bran to the diet of pregnant women with gestational diabetes can help significantly reduce their fasting and postprandial blood glucose levels.
In the methodology of this study, a randomized clinical trial was conducted on 112 pregnant women suffering from gestational diabetes. These women were randomly split into two groups of 56. Both groups were given a diet specifically designed for managing gestational diabetes. However, the intervention group additionally received 30 grams of oat bran daily at lunch and dinner for a period of 4 weeks. The researchers performed tests on fasting blood glucose and two-hour postprandial glucose levels for both groups prior to the intervention and then at two-week intervals during the intervention.
The results of the study revealed that the average blood glucose level before the intervention showed no significant differences between the two groups. However, both the mean fasting blood glucose and the two-hour postprandial glucose levels of the intervention group showed a significant decrease two and four weeks after the intervention when compared with the control group, due to the addition of oat bran in their diet.
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Oat consumption can significantly improve lipid profiles, particularly reducing total cholesterol and LDL cholesterol, with potential positive effects on triglycerides and HDL cholesterol under certain conditions.
2023 Current Problems in Cardiology Effect of Oat (Avena sativa L.) Consumption on Lipid Profile With Focus on Triglycerides and High-density Lipoprotein Cholesterol (HDL-C): An Updated Systematic Review Amerizadeh A, Ghaheh HS, Vaseghi G, Farajzadegan Z, Asgary S
Systematic Review Cholesterol HDL-C Oats
In the methodology of this review study, information was gathered from various databases, including PubMed, Web of Science, and Google Scholar. The gathered data consisted of a total of 17 studies that explored the direct effects of oat consumption on lipid profiles. The focus of the studies included were the impacts of oat on levels of total cholesterol, VLDL, LDL-C, TG, and HDL-C. The review was meticulous, with a detailed examination of each study, particularly those showing positive effects of oat/beta-glucan consumption on triglycerides.
The review's results revealed that oat intake significantly reduces the levels of total cholesterol, VLDL, and LDL-C. The effect of oat ingestion on triglyceride levels was varied; of the 17 studies, 6 reported a decrease in triglycerides. Interestingly, one study showed an improvement in HDL-C levels following oat consumption. It was also observed that oat intake might effectively reduce triglycerides in healthy individuals and overweight people or those with diabetes or metabolic syndrome, especially when larger amounts of oat were consumed over a longer duration or in conjunction with a calorie-reducing diet. The use of oat together with certain dietary programs was suggested to potentially enhance its positive effects on lipid profiles.
Oats, in various edible forms, can regulate appetite hormones, aid weight management, strengthen the immune system, and contribute to gut health, making them effective for obesity management.
2023 Current Nutrition Reports Impact of Oats on Appetite Hormones and Body Weight Management: A Review Shehzad A, Rabail R, Munir S, Jan H, Fernández-Lázaro D, Aadil RM
Review Article Appetite Oats Obesity
The research methodology entailed a review of the role of hunger hormones in managing obesity and studying the influence of different edible forms of oats like whole, naked, sprouted, or supplemented oats on these hormones. The relationship between consumption of oats and various indicators of obesity such as body mass index, waist circumference, body weight, appetite, and blood pressure, amongst others was investigated. Furthermore, the nutritional content of oats like protein, fiber, healthy fats, and bioactive ingredients was analyzed, with particular emphasis on Beta-glucan as it lowers cholesterol levels and enhances the body's defense system.
The results of the studies showed that oats have several therapeutic potentials. An intake of oats helps manage body weight and control appetite. In addition, oats positively impact the immune system and lower cholesterol levels in the serum. They also foster gut health by promoting the increased production of short-chain fatty acids. Despite these findings, some studies showed no significant effects of oats on appetite.
Enriching a regular diet with oat β-glucan can improve glycemic control, augment feelings of fullness, and positively modulate gut microbiota in individuals with type-2 diabetes.
2021 Journal of Functional Foods Effect of dietary supplementation with oat β-glucan for 3 months in subjects with type 2 diabetes: A randomized, double-blind, controlled clinical trial Pino JL, Mujica V, Arredondo M
Randomised Controlled Trial Blood Sugar Gut Microbiota HbA1C
The research involved 37 subjects with type-2 diabetes, who were required to consume either oat β-glucan or microcrystalline cellulose as a control dietary supplement each day for a period of 12 weeks. The parameters assessed throughout the study included fasting glucose, insulin, a variety of hormones and peptides regulating appetite (like ghrelin, leptin, GLP-1, PYY), caloric intake, and the profile of their intestinal microbiota.
The results indicated a decrease in HbA1c, insulin, C-peptide levels, as well as certain bacterial populations (Lactobacillus spp, and Butyrate-producing bacteria) in subjects who consumed β-glucan. Significant differences were observed in levels of certain hormones, namely leptin, GLP-1, and PYY, between the two groups. The intake of oat β-glucan emerged as a potential strategy to manage type-2 diabetes, by improving glycemic control, enhancing feelings of satiety, and fostering a healthier gut microbiota profile.
Daily intake of 3 grams of oat beta-glucans significantly reduces LDL-Cholesterol, Total Cholesterol, and non-HDL-Cholesterol levels without impacting intestinal well-being or glucose levels.
2020 Nutrients A Randomized Placebo-Controlled Clinical Trial to Evaluate the Medium-Term Effects of Oat Fibers on Human Health: The Beta-Glucan Effects on Lipid Profile, Glycemia and inTestinal Health (BELT) Study Cicero AFG, Fogacci F, Veronesi M, Strocchi E, Grandi E, Rizzoli E, et al.
Randomised Controlled Trial Cholesterol Oats
The BELT Study was a double-blind, placebo-controlled, cross-over randomized clinical trial conducted over 8 weeks. It involved 83 Italian subjects with moderate hypercholesterolemia, who had low cardiovascular risk and followed a Mediterranean diet. The participants were administered either 3g/day of oat beta-glucans or a placebo.
The results indicated that beta-glucans significantly reduced LDL-C, TC, and non-HDL-C levels in participants from both the baseline and the 4 and 8-week marks. However, no notable impact was observed on fasting plasma glucose or self-perceived intestinal well-being. These outcomes remained consistent irrespective of whether the subjects were given the beta-glucans or the placebo.
Traditional Chinese medicine, especially Zuo Gui Wan, red raspberry leaves, and Orthosiphon stamineus, seems to control gestational diabetes effectively without reported toxicity.
2019 Journal of Diabetes Research Evaluating Traditional Chinese Medicine and Herbal Products for the Treatment of Gestational Diabetes Mellitus Xu YXZ, Xi S, Qian X
Review Article Gestational Diabetes Mao Xu Cao Raspberry Leaf
The study initiated a systematic search across PubMed, Web of Science, and Embase databases to pinpoint research discussing the impact of traditional Chinese medicine on pregnancy. The results were then further narrowed down to focus on any correlation with all forms of diabetes mellitus. The primary thread that emerged was the beneficial effect of three main herbal remedies: Zuo Gui Wan, red raspberry leaves, and Orthosiphon stamineus.
Based off of the results from this search, a focal review of these herbal elements and their associations with type 2 diabetes mellitus was undertaken. Across the board, these remedies demonstrated positive effects on metabolic health, especially among women dealing with gestational diabetes. No experimental models reported any toxicity or harmful side effects associated with these herbal treatments. The report calls out that current studies on both conventional and alternative interventions for gestational diabetes are immensely lacking, emphasizing the need for a standardized protocol to evaluate the efficacy of these herbal medicines.
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