Diseases of the heart and circulatory system are the main
cause of death in the UK, with cardiovascular disease as one of the main causes
of premature death, characterised by hardening and narrowing of blood
vessels. In 2009, over 180,000 people
died from cardiovascular disease in the UK alone – one in 3 of all deaths.
The primary traditional risk factor for cardiovascular
disease is dyslipidaemia (imbalance of fats (lipids)); an elevated
concentration of the “bad” cholesterol, Low-Density Lipoprotein (LDL) is a
well-established, independent risk factor for atherosclerosis (narrowing of the
arteries) and a 10% reduction of serum cholesterol is estimated to lower this
risk by a staggering 50% at age 40 years and 20% at age 70.
Dietary therapy is the cornerstone of strategies to lower
LDL levels and exploration into safe and effective alternatives to statin
therapy, which often has undesirable side-effects, is of significant and
clinical importance.
Plant sterols or phytosterols are bioactive compounds, structurally
similar to cholesterol, and found naturally in various concentrations in plant
foods, notably vegetable oils; more than 250 phytosterols have been identified
with sitosterol, campesterol and stigmasterol being the most abundant.
So how do these plant compounds actually lower cholesterol? A spectrum of research demonstrates that
phytosterols decrease circulating cholesterol concentrations by competing for absorption
in the intestine, thereby inhibiting the absorption of both dietary cholesterol
and the cholesterol made by our own body, see pics below.
The amazing thing is that the “good” cholesterol, High
Density Lipoprotein (HDL) remains unaffected by dietary phytosterol intake and the
research also demonstrates no adverse side-effects.
Phytosterols have been used in food products since the mid 90’s;
foods fortified range from spreads to yogurt & milk and they can, of
course, be taken in supplement form, which may be of benefit to individuals who
are at high risk of cardiovascular disease, working to achieve target
cholesterol levels and/or unable to tolerate statins.
High potency plant sterols
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Look after your heart x
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