Isolated soluble fiber supplementation improves anthropometric and metabolic outcomes in overweight and obese adults, according to a recent study. The systematic review and meta-analysis included 12 randomized controlled trials with 609 participants from 2 to 17 weeks of duration. Outcomes related to weight management and glucose and insulin metabolism were evaluated. Researchers found:
- Soluble fiber supplementation reduced body mass index (BMI) by 0.84, body weight by 2.52 kg, and body fat by 0.41%, compared with placebo.
- Supplementation reduced fasting glucose by 0.17 mmol/L, and fasting insulin by 15.88 pmol/L, compared with placebo.
Thompson SV, Hannon BA, An R, Holscher HD. Effects of isolated soluble fiber supplementation on body weight, glycemia, and insulinemia in adults with overweight and obesity: a systematic review ad meta-analysis or randomized controlled trials. Am J Clin Nutr. 2017;106(6):1514-1528. doi:10.3945/ajcn.117.163246.
Most Americans only get about 50% of the recommended daily fiber intake, with obese adults often getting even less.1 The most common dietary sources of fiber are cereals, fruits, and vegetables but most people don’t get enough fiber through these dietary sources, so consideration of additional fiber through supplementation may make sense. Soluble fiber intake leads to increased satiety, improved blood lipid concentrations, and improved glycemic response. Examples of soluble fiber include psyllium (Metamucil) which is a fermentable soluble fiber. Fermentable soluble fibers have advantageous metabolic benefits, though they often cause gas production and bloating. Non-fermentable soluble fibers like Methylcellulose (Citracel) typically do not cause gas production and bloating, though may not have as extensive metabolic benefits. The current study, showing clinically important reduction in weight (average 5 pounds) and improvement in glucose with soluble fiber supplementation, strongly suggests that recommendation of supplementation with soluble fiber might be a productive part of our advice to patients who are trying to lose weight. — Neil Skolnik, MD
- King DE, Mainous AG, Lambourne CA. Trends in dietary fiber intake in the United States, 1999-2008. J Acad Nutr Diet. 2012;112:642–8.
This Week's Must Reads
CVD Events Prevented with New AHA BP Guideline, Circulation; ePub 2018 Nov 19; Bress, et al
USPSTF: Interventions to Prevent Child Maltreatment, JAMA; 2018 Nov 27; US Preventive Services Task Force
Team-Based Primary Care in Chronically Ill Patients, JAMA Intern Med; ePub 2018 Nov 26; Meyers, et al
Rotating Night Shift Work & Risk of T2D, BMJ; ePub 2018 Nov 21; Shan, Li, et al
PUFAs for Primary & Secondary CVD Prevention, Cochrane Library; ePub 2018 Nov 27; Abdelhamid, et al
Must Reads in Obesity
Is Obesity Associated With Adverse CV Outcomes?, JAMA Netw Open; 2018 Nov 16; Riaz, et al
Early Antibiotic Use & Weight Outcomes in Children, Pediatrics; ePub 2018 Oct 31; Block, Bailey, et al
Efficacy of Bariatric Procedures for Weight Loss, Ann Intern Med; ePub 2018 Oct 30; Arterburn, et al
Bariatric Surgery & Macrovascular Disease in T2D, JAMA; 2018 Oct 16; Fisher, Johnson, et al
Adverse Childhood Experiences & Weight Status, J Pediatr; ePub 2018 Oct 1; Davis, Barnes, et al