Cholesterol-lowering effects of oat β-glucan: a meta-analysis of randomized controlled trials

This recent paper in the American Journal of Clinical Nutrition provides a meta-analysis of 28 randomized controlled trials.  The authors concluded that “adding ≥3 g oat beta glucan/day to the diet reduces LDL and total cholesterol by 0.25 mmol/L and 0.30 mmol/L, respectively, without changing HDL cholesterol or triglycerides.”  And added “Although generally confirming the results of previous meta-analyses that oat products reduce serum cholesterol, the present results differ in that the magnitude of the effects seen are 50–100% greater than those reported in previous meta-analyses. This is important because our study provides a more accurate assessment of the effect on serum cholesterol of following the recommendations of food standards agencies to consume ≥3 g OBG/d”.  Barley is another good source of beta glucans.