Thursday, 28 June 2012

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Dieting Blamed For Rise in Cholesterol:

Scientists claim a dieting craze in Sweden is behind a shock rise in cholesterol levels that could be making people vulnerable to heart disease.
The worrying link was discovered after a 25-year study put the focus on at diet and heart disease risk factors in the north of the country. It found an unexpected rise in general cholesterol levels after people living there switched to greater consumption of fats in  2004, reversing earlier trends. 
Dr Annika Dahlqvist
At that time there was a hugely popular diet launched, which was similar to the Atkins Diet, which led to an explosion in the popularity of low carbohydrate/high fat (LCHF) diets.
This diet stripped out sugars and starch but increased protein and boosted the amount of fats, including saturated fat.
One the leading supporters of the new diet was Dr Annika Dahlqvist. A poll last year suggested that 25 per cent of all Swedes had adopted an LCHF diet in some form. Of those, about 5% had changed their eating habits. 
A leading Swedish website, the Diet Doctor, hailed the change as a  "Swedish low carb revolution". It was claimed that shops ran out of butter at the height of the craze. 
foods high in cholesterol
The study into problems with heart disease came after a high incidence of the problem in northern Sweden. Scientists analysed data  between 1986 and 2010. 
At first there was a reduction in cholesterol levels throughout the 1990s thanks to a campaign at the time to improve food labelling and dietary advice. Blood cholesterol levels remained roughly the same until 2007, but then shot up.  In 2010 the average cholesterol level for men was around 5.5 millimolesper litre of blood, and for women slightly less. This was despite a significant increase in the number of people taking cholesterol-lowering drugs.
Professor Ingegerd Johansson, from the University of Umea, who led the research published in Nutrition Journal, said: "The association between nutrition and health is complex. It involves specific food components, interactions among those food components, and interactions with genetic factors and individual needs. While low carbohydrate/high fat diets may help short-term weight loss, these results of this Swedish study demonstrate that long-term weight loss is not maintained and that this diet increases blood cholesterol, which has a major impact on risk of cardiovascular disease."
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