Dck. Roberts et al., THE CHOLESTEROL-LOWERING EFFECT OF A BREAKFAST CEREAL CONTAINING PSYLLIUM FIBER, Medical journal of Australia, 161(11-12), 1994, pp. 660-664
Objective: To determine the cholesterol-lowering effect of ready-to-ea
t cereal containing soluble fibre as psyllium (86%), oatmeal and barle
y on the plasma lipids of otherwise healthy men with mild hypercholest
erolaemia, who were already eating a diet low in saturated fats. Desig
n: Double-blind crossover trial, lasting 12 weeks, in volunteers eatin
g each cereal for six weeks at home, in Sydney and Newcastle (New Sout
h Wales). Participants: Eighty-one men (average age 50 years; range, 3
1-69 years) who had initial plasma (total) cholesterol concentrations
of 5.8-8.8 mmol/L, but did not have major illness, obesity or diabetes
, and were not on special diets or taking stool bulkers. Intervention:
One box of cereal was eaten each day: control, 60 g wheat/wheat bran
(2 g soluble fibre); or test, 50 g of product containing psyllium/oats
/barley (12 g soluble fibre). Subjects were allocated at random, when
established on a low saturated fat diet, to wheat followed by psyllium
cereal or psyllium followed by wheat cereal. Main outcome measures: P
lasma total cholesterol, high density lipoprotein cholesterol, triglyc
eride and low density lipoprotein cholesterol concentrations measured
twice, four to seven days apart before the start of the trial and then
after six weeks of eating each cereal. Results: Compliance was excell
ent with both cereals. There were no significant differences in subjec
ts) macronutrient intake or body weight between the two six-week perio
ds. Total cholesterol and low density lipoprotein cholesterol concentr
ations fell. significantly on psyllium cereal, relative to wheat cerea
l, in both periods at both centres (mean -3.2% and -4.4%, respectively
). There were no consistent changes in triglyceride or high density Li
poprotein cholesterol concentrations. Conclusion: This type of product
, which is easy to consume on a daily basis, is a useful adjunct to th
e dietary management of mild hypercholesterolaemia.