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Glycemic index diet for dummies
Eating fewer carbohydrates may be trendy-- but since your body needs them to function, eliminating too many carbs from your diet is neither healthy nor practical. Learn the glycemic index system to help you shed unwanted pounds and improve your overall health.-- Source other than Library of Congress.
Book
Short-term effects of a low glycemic index carob-containing snack on energy intake, satiety, and glycemic response in normal-weight, healthy adults: Results from two randomized trials
The potential positive health effects of carob-containing snacks are largely unknown. Therefore, the aims of these studies were to determine the glycemic index (GI) of a carob snack compared with chocolate cookie containing equal amounts of available carbohydrates and to compare the effects of a carob versus chocolate cookie preload consumed as snack before a meal on (a) short-term satiety response measured by subsequent ad libitum meal intake, (b) subjective satiety as assessed by visual analog scales and (c) postprandial glycemic response.
Ten healthy, normal-weight volunteers participated in GI investigation. Then, 50 healthy, normal-weight individuals consumed, crossover, in random order, the preloads as snack, with 1-wk washout period. Ad libitum meal (lunch and dessert) was offered. Capillary blood glucose samples were collected at baseline, 2 h after breakfast, just before preload consumption, 2 h after preload, 3 h after preload, just before meal (lunch and dessert), 1 h after meal, and 2 h after meal consumption.
The carob snack was a low GI food, whereas the chocolate cookie was a high GI food (40 versus 78, respectively, on glucose scale). Consumption of the carob preload decreased the glycemic response to a following meal and to the individual's feelings of hunger, desire to eat, preoccupation with food, and thirst between snack and meal, as assessed with the use of visual analog scales. Subsequently, participants consumed less amounts of food (g) and had lower total energy intake at mealtimes.
The carob snack led to increased satiety, lower energy intake at meal, and decreased postmeal glycemic response possibly due to its low GI value. Identifying foods that promote satiety and decrease glycemic response without increasing the overall energy intake may offer advantages to body weight and glycemic control.
•A carob-based snack was found to be a low-glycemic-index food.•The carob snack led to increased satiety and lower energy intake at ad libitum meal.•The carob preload snack significantly decreased the postmeal glycemic response.•Snacks formulated with carob flour may offer advantages to body weight and glycemic control.
Journal Article
Effect of a low glycemic index Mediterranean diet on non-alcoholic fatty liver disease. A randomized controlled clinici trial
Non-Alcoholic Fatty Liver Disease (NAFLD) is currently the most common form of liver disease worldwide affecting all ages and ethnic groups and it has become a consistent threat even in young people. Our aim was to estimate the effect of a Low Glycemic Index Mediterranean Diet (LGIMD) on the NAFLD score as measured by a Liver Ultrasonography (LUS).
NUTRIzione in EPAtologia (NUTRIEPA) is a population-based Double-Blind RCT. Data were collected in 2011 and analyzed in 2013-14.
98 men and women coming from Putignano (Puglia, Southern Italy) were drawn from a previous randomly sampled population-based study and identified as having moderate or severe NAFLD.
The intervention strategy was the assignment of a LGIMD or a control diet.
The main outcome measure was NAFLD score, defined by LUS.
After randomization, 50 subjects were assigned to a LGIMD and 48 to a control diet. The study lasted six months and all participants were subject to monthly controls/checks. Adherence to the LGIMD as measured by Mediterranean Adequacy Index (MAI) showed a median of 10.1. A negative interaction between time and LGIMD on the NAFLD score (-4.14, 95% CI -6.78,-1.49) was observed, and became more evident at the sixth month (-4.43, 95%CI -7.15, -1.71). A positive effect of the interaction among LGIMD, time and age (Third month: 0.07, 95% CI 0.02, 0.12; Sixth month: 0.08, 95% CI 0.03,0.13) was also observed.
LGIMD was found to decrease the NAFLD score in a relatively short time. Encouraging those subjects who do not seek medical attention but still have NAFLD to follow a LGIMD and other life-style interventions, may reduce the degree of severity of the disease. Dietary intervention of this kind, could also form the cornerstone of primary prevention of Type 2 Diabetes Mellitus (T2DM) and cardiovascular disease.
Journal Article
Satiety, glycemic profiles, total antioxidant capacity, and postprandial glycemic responses to different sugars in healthy Malaysian adults
•The glycemic index value of minimally refined brown sugar (MRBS) was less than that of refined sugar (RS).•MRBS showed better glycemic profiles compared with RS according to glucagon values.•The satiety profiles for MRBS were less than those of RS according to peptide tyrosine and C-peptide values.•The consumption of MRBS jelly showed higher total antioxidant capacity values compared with RS jelly.
We investigated a low-glycemic index (GI), minimally refined brown sugar (MRBS) that retains a consistent amount of antioxidant polyphenols. This study aimed to determine whether MRBS has a lower postprandial glycemic response and GI value compared with other types of refined sugar (RS). Low glycemic response foods are also reported to increase satiety. Accordingly, we also evaluated satiety profiles, glycemic profiles (glucose, insulin, and glucagon), and total antioxidant capacity (TAC).
This work shows the results of two single-blind, cross-over studies (studies 1 and 2). For each study 14 healthy Malay individuals with a normal body mass index were recruited. In study 1, capillary blood samples were used to determine the GI of the tested sugars. Venous blood samples were used in study 2 to measure the concentrations of satiety hormones (peptide tyrosine, C-peptide, glucagon-like peptide-1, and leptin), TAC, plasma glucose, insulin, and glucagon concentrations at baseline (0 min) and at 60 and 120 min after consumption of the MRBS and RS formulated jellies.
The incremental area under the curve of glucose positive control (312 ± 62.54 mmol.min/L) was significantly higher than that of other types of sucrose (P < 0.05). MRBS (GI: 54 ± 4.5 mmol.min/L) and brown sugar (GI: 50 ± 5.0 mmol.min/L) were categorized as low GI, and RS (GI: 64 ± 5.73 mmol.min/L) was in the medium category, which was significantly lower than the GI of glucose (GI: 100 mmol.min/L; P < 0.05). Likewise, there was a significant difference in satiety profiles (peptide tyrosine and C-peptide), glycemic profile (glucagon), and TAC (P < 0.05) between RS and MRBS jellies.
The results of our work show that MRBS had a lower GI (study 1), and better satiety, glycemic profiles, and TAC (study 2) compared with RS.
Journal Article
Language Barriers, Physician-Patient Language Concordance, and Glycemic Control Among Insured Latinos with Diabetes: The Diabetes Study of Northern California (DISTANCE)
ABSTRACT
BACKGROUND
A significant proportion of US Latinos with diabetes have limited English proficiency (LEP). Whether language barriers in health care contribute to poor glycemic control is unknown.
OBJECTIVE
To assess the association between limited English proficiency (LEP) and glycemic control and whether this association is modified by having a language-concordant physician.
DESIGN
Cross-sectional, observational study using data from the 2005–2006 Diabetes Study of Northern California (DISTANCE). Patients received care in a managed care setting with interpreter services and self-reported their English language ability and the Spanish language ability of their physician. Outcome was poor glycemic control (glycosylated hemoglobin A1c > 9%).
KEY RESULTS
The unadjusted percentage of patients with poor glycemic control was similar among Latino patients with LEP (n = 510) and Latino English-speakers (n = 2,683), and higher in both groups than in whites (n = 3,545) (21% vs 18% vs. 10%, p < 0.005). This relationship differed significantly by patient-provider language concordance (p < 0.01 for interaction). LEP patients with language-discordant physicians (n = 115) were more likely than LEP patients with language-concordant physicians (n = 137) to have poor glycemic control (27.8% vs 16.1% p = 0.02). After controlling for potential demographic and clinical confounders, LEP Latinos with language-concordant physicians had similar odds of poor glycemic control as Latino English speakers (OR 0.89; CI 0.53–1.49), whereas LEP Latinos with language-discordant physicians had greater odds of poor control than Latino English speakers (OR 1.76; CI 1.04–2.97). Among LEP Latinos, having a language discordant physician was associated with significantly poorer glycemic control (OR 1.98; CI 1.03–3.80).
CONCLUSIONS
Language barriers contribute to health disparities among Latinos with diabetes. Limited English proficiency is an independent predictor for poor glycemic control among insured US Latinos with diabetes, an association not observed when care is provided by language-concordant physicians. Future research should determine if strategies to increase language-concordant care improve glycemic control among US Latinos with LEP.
Journal Article
Impact of Intensive Glycemic Control on the Incidence of Atrial Fibrillation and Associated Cardiovascular Outcomes in Patients With Type 2 Diabetes Mellitus (from the Action to Control Cardiovascular Risk in Diabetes Study)
Atrial fibrillation (AF) is prevalent in patients with type 2 diabetes mellitus (DM) and is associated with markers of poor glycemic control; however, the impact of glycemic control on incident AF and outcomes is unknown. The aims of this study were to prospectively evaluate if intensive glycemic control in patients with DM affects incident AF and to evaluate morbidity and mortality in patients with DM and incident AF. A total of 10,082 patients with DM from the Action to Control Cardiovascular Risk in Diabetes (ACCORD) cohort were studied in a randomized, double-blind fashion. Participants were randomized to an intensive therapeutic strategy targeting a glycated hemoglobin level of <6.0% or a standard strategy targeting a glycated hemoglobin level of 7.0% to 7.9%. Incident AF occurred in 159 patients (1.58%) over the follow-up period, at a rate of 5.9 per 1,000 patient-years in the intensive-therapy group and a rate of 6.37 per 1,000 patient-years in the standard-therapy group (p = 0.52). In a multivariate model, predictors of incident AF were age, weight, diastolic blood pressure, heart rate, and heart failure history. Patients with DM and new-onset AF had a hazard ratio of 2.65 for all-cause mortality (95% confidence interval 1.8 to 3.86, p <0.0001), a hazard ratio of 2.1 for myocardial infarction (95% confidence interval 1.33 to 3.31, p = 0.0015), and a hazard ratio of 3.80 for the development of heart failure (95% confidence interval 2.48 to 5.84, p <0.0001). In conclusion, intensive glycemic control did not affect the rate of new-onset AF. Patients with DM and incident AF had an increased risk for morbidity and mortality compared with those without AF.
•Intensive glycemic control did not alter the rate of incident AF.•The investigators describe a number of predictors of AF in patients with diabetes.•Incident AF is associated with adverse outcomes in patients with diabetes.
Journal Article