Volkoren haver tegen hart- en vaatziektes.*
Uit een analyse van tien studies over volkoren voeding en hart- en vaatziektes blijkt dat volkoren voeding inderdaad de cholesterolwaarden doen dalen. Acht studies gebruikten volkoren haver. Toch blijven er nog vragen die nader onderzoek vereisen omdat alle studies slechts 4-8 weken duurden, vaak gefinancierd werden door de voedingsfabrikanten en het niet duidelijk is wat nu precies onder volkoren verstaan wordt.
Whole
Grain Oats May Reduce Risk Factors For Coronary Heart Disease
Trials
lasting 4 to 8 weeks indicate that including wholegrain oats in your diet may
lower total and low-density lipoprotein cholesterol.
Coronary heart disease (CHD) is a major cause of death and ill health. One of
the risk factors for CHD is elevated blood levels of total cholesterol and of
low density lipoprotein cholesterol. Existing observational studies indicate
that wholegrain cereals may reduce the risk of CHD, possibly by reducing
cholesterol levels.
A Cochrane Systematic Review identified ten trials that assessed the
effect of giving wholegrain foods to adults. Of these studies, eight used
wholegrain oats. The trials involved a total of 914 adults who had at least one
major risk factor for CHD. All were short-term studies lasting only 4 to 8 weeks
and involved small numbers of people; most were wholly or partly funded by
companies that had interest in cereal products.
"Well-designed, adequately powered studies are now needed to evaluate the
effects of long-term consumption of oats," says Dr Sarah Kelly of the
School of Health and Social Care at the University of Teesside, Middlesbrough.
The review concluded that there is enough evidence from wholegrain oats to
suggest that healthcare professionals could recommend oats as part of
cholesterol reduction programmes.
The Researchers also point to an inconsistency in the use of the term 'wholegrain'.
"Some reviews of wholegrain products include studies conducted with dietary
fibre or oat bran and have referred to these refined products as wholegrain.
There is a need for greater clarity and consistency between the terms wholegrain,
bran, germ and fibre in published research". (Mei 2007)