1.
Potato Fibers Have Positive Effects on Subjective Appetite Sensations in Healthy Men, but Not on Fecal Fat Excretion: A Randomized Controlled Single-Blind Crossover Trial.
Thorning, TK, Bertolt, CJ, Nielsen, MS, Ritz, C, Astrup, A, Raben, A
Nutrients. 2020;(11)
Abstract
Dietary fibers can affect appetite and gut metabolism, but the effect of the novel potato fibers FiberBind and rhamnogalacturonan I (RG-I) is unknown. We, therefore, aimed to investigate the effect of daily intake of FiberBind and RG-I on appetite sensations and fecal fat excretion. In a single-blinded, randomized, three-way crossover trial, wheat buns with FiberBind, RG-I, or low fiber (control) were consumed by 18 healthy men during a 21-day period. Appetite sensation and blood samples during a 3 h meal test, fecal fat content, and ad libitum energy intake were assessed after each period. Compared to RG-I and control, FiberBind caused a higher composite satiety score (6% ± 2% and 5% ± 2%), lower prospective food consumption (5% ± 2% and 6% ± 2%), and lower desire to eat (7% ± 3% and 6% ± 3%) (all p < 0.05). FiberBind also caused higher satiety (6% ± 2%) and fullness (9% ± 3%) compared to RG-I (all p < 0.01). No effects on fecal fat excretion or energy intake were found. The RG-I fiber caused higher postprandial glucose concentration compared to FiberBind (p < 0.05) and higher insulin concentration at 180 min compared to control (p < 0.05). Compared to the control, RG-I and FiberBind lowered peak insulin concentration (both p < 0.05) and delayed time to peak for glucose (both p < 0.05). In conclusion, FiberBind intake could be beneficial for appetite regulation, but neither FiberBind nor RG-I affected fecal fat excretion or energy intake.
2.
Pretreatment Fasting Plasma Glucose Modifies Dietary Weight Loss Maintenance Success: Results from a Stratified RCT.
Hjorth, MF, Due, A, Larsen, TM, Astrup, A
Obesity (Silver Spring, Md.). 2017;(12):2045-2048
Abstract
OBJECTIVE Levels of fasting plasma glucose (FPG) and fasting insulin (FI) were studied as diet-specific prognostic markers for successful weight loss maintenance in participants with overweight. METHODS After losing ≥ 8% of body weight, participants received one of three ad libitum diets for 6 months: (1) a moderate-fat diet high in monounsaturated fatty acids (MUFA); a low-fat, high-fiber diet (Nordic Nutrition Recommendations [NNR]); and the Average Danish Diet (ADD). Participants were categorized as having low (< 90 mg/dL) or high (90-105 mg/dL) FPG based on preintervention values. Median FI among those having high FPG was used as a cutoff for FI (FI ≤ 50 pmol/L; FI > 50 pmol/L). RESULTS Participants with low FPG and randomized to MUFA, NNR, and ADD regained similarly 2.1 to 2.5 kg after 6 months. By contrast, participants with high FPG and randomized to MUFA, NNR, and ADD regained 2.73 kg (95% CI 1.33 to 4.13; P < 0.001), -0.05 kg (95% CI -1.95 to 1.86; P = 0.96), and 4.16 kg (95% CI 2.27 to 6.06; P < 0.001) after 6 months, respectively, resulting in lower weight regain on NNR compared to ADD (-4.21 kg [95% CI -6.83 to -1.59]; P = 0.002) and MUFA (95% CI -2.77 kg [-5.12 to -0.43]; P = 0.020). The addition of FI strengthened these associations. CONCLUSIONS Slightly elevated pretreatment FPG determined success in dietary weight loss maintenance among overweight patients on ad libitum diets differing in macronutrient and fiber content.
3.
Flaxseed dietary fibers suppress postprandial lipemia and appetite sensation in young men.
Kristensen, M, Savorani, F, Christensen, S, Engelsen, SB, Bügel, S, Toubro, S, Tetens, I, Astrup, A
Nutrition, metabolism, and cardiovascular diseases : NMCD. 2013;(2):136-43
Abstract
BACKGROUND AND AIM Dietary fibers (DF) are linked to a reduced risk of life-style diseases, which relate to their physiological effects in the gastrointestinal tract. The aim was to examine whether flaxseed DF-enriched meals suppress postprandial lipemia and reduce appetite. METHODS AND RESULTS Four different iso-caloric meals were tested in 18 young men in a double-blind randomized crossover design. Test meals were served after an overnight fast. DF content and source were: control (C): 1.4 g/MJ; whole flaxseed (WF): 2.4 g/MJ from whole flaxseeds; low-mucilage dose (LM): 2.4 g/MJ from flaxseed DF; high-mucilage dose (HM): 3.4 g/MJ from flaxseed DF. During the 7 h test day, subjective appetite sensation was assessed using visual analogue scales and appetite-regulating hormones, and lipemia and glycemia were measured, after which ad libitum energy intake was recorded. There was a significant time × meal effect on triacylglycerols (TG) (p = 0.02) and an 18% smaller area under the curve (AUC) for TG after meal HM compared to meal C was observed (p < 0.01). AUC for insulin was smaller after both LM and HM meals compared to C and WF meals. Higher mean ratings of satiety (p < 0.01) and fullness (p = 0.03) was seen following the HM meal compared to meal C. AUC for ghrelin, CCK and GLP-1 and ad libitum energy intake did not differ between meals, but ghrelin response exhibited a different response pattern after the mucilage-containing meals. CONCLUSION These findings suggest that flaxseed DF may suppress postprandial lipemia and appetite although subsequent energy intake was not affected.
4.
Flaxseed dietary fiber supplements for suppression of appetite and food intake.
Ibrügger, S, Kristensen, M, Mikkelsen, MS, Astrup, A
Appetite. 2012;(2):490-5
Abstract
UNLABELLED We conducted two single-blinded randomized crossover acute studies with 24 and 20 subjects, respectively, to compare (I) CONTROL vs. Flax drink; and (II) Flax drink vs. Flax tablets. The subjects were exposed to one of the treatments after an overnight fast, and rated appetite sensation for 120 min using visual analog scales (VAS). Hereafter they consumed an ad libitum early lunch to assess energy intake. The treatments were iso-caloric and iso-volumeric: CONTROL 300 mL drink; Flax drink: CONTROL drink with addition flax fiber extract (2.5 g of soluble fibers); and Flax tablet: CONTROL drink with flax fiber tablets (2.5 g of soluble fibers). Flax drink increased sensation of satiety and fullness compared to CONTROL and a significant decrease in subsequent energy intake was observed after the Flax drink compared to CONTROL (2937 vs. 3214 kJ). Appetite ratings were similar for Flax tablets and Flax drink as they did not differ by more than 1-4%. Subsequent energy intake was similar after the two treatments (3370 vs. 3379 kJ). A small dose of flaxseed fiber significantly suppresses appetite and energy intake. Furthermore, flaxseed fibers administered as drinks or tablets produce similar responses.