Effects on serum lipids of adding instant oats to usual American diets.
L Van Horn,
A Moag-Stahlberg,
K A Liu,
C Ballew,
K Ruth,
R Hughes and
J Stamler
Department of Community Health and Preventive Medicine, Northwestern University Medical School, Chicago, IL 60611-4402.
This study was designed as a test of the serum lipid responseand dietary adaptation to recommended daily inclusion of instantoats in an otherwise regular diet. Hypercholesterolemic adultswere randomly assigned to a control or intervention group. Participantsin the intervention group were given packages of instant oatsand requested to eat two servings per day (approximately twoounces dry weight), substituting the oats for other carbohydratefoods in order to maintain baseline calorie intake and keepweight stable. Serum lipids were measured in blood collectedby venipuncture at baseline, four weeks, and eight weeks. Baselinemean total cholesterol (TC) levels were 6.56 mmol/L and 6.39mmol/L for intervention and control groups, respectively. Aftereight weeks, mean serum total cholesterol of the interventiongroup was lower by -0.40 mmol/L, and mean net difference inTC between the two groups was 0.32 mmol/L (95% CI: 0.09, 0.54).Low-density lipoprotein-cholesterol was similarly reduced withmean net difference of 0.25 mmol/L (95% CI: 0.02, 0.48) betweenthe two groups. Mean soluble fiber intake increased along withslight self-imposed reductions in mean total fat, saturatedfat, and dietary cholesterol intake in the intervention group.Neither group changed mean body weight. Daily inclusion of twoounces of oats appeared to facilitate reduction of serum totalcholesterol and LDL-C in these hyperlipidemic individuals.
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