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'Caveman diet' lowers the risk of heart disease, new research shows
Reported 09 May, 2008
Eating like a caveman could reduce the risk of heart
disease, according to new research.
Just three weeks on a stone-age diet rich in lean meat, vegetables, berries
and nuts was enough to lower the chances of suffering a heart attack or
stroke.
Scientists at the Karolinska Institute in Sweden who tested the diet on a
group of volunteers found they lost weight, lowered blood pressure and
slashed levels of a blood-thickening agent known to cause deadly clots.
The results, published in the European Journal of Clinical Nutrition,
support earlier findings that the so-called paleolithic diet could protect
against diabetes.
For centuries, our ancestors lived only on foods that could be speared or
picked from trees and plants.
Some scientists argue that the modern human body is still genetically
programmed for this type of diet.
That means no cereals, bread, milk, butter, cheese or sugar but plenty of
lean meat, fish, fruits, vegetables and nuts.
To test its effect, the Swedish researchers recruited 20 healthy volunteers
and put them on caveman rations for three weeks.
Each patient was assessed for weight, body mass index, blood pressure and
cholesterol at the beginning of the experiment.
They were then given a list of stone-age foods they could eat, including
fresh or frozen fruit, berries or vegetables, lean meat, unsalted fish,
canned tomatoes, lemon or lime juice, spices and coffee or tea without milk
or sugar.
Banned foods included beans, salt, peanuts, dairy products, pasta or rice,
sausages, alcohol, sugar and fruit juice.
However, they were also allowed up to two potatoes a day and a weekly treat
of dried fruit, cured meats and a portion of fatty meat.
After three weeks, the volunteers were tested again. Among the 14 who
successfully completed the diet, the average weight loss was around five
pounds.
Body mass index - a measurement of someone's weight compared to their height
- dropped by an average of 0.8. A healthy BMI is between 18.5 and 25.
Systolic blood pressure, the higher of the two readings during a check, fell
by an average of three mmHg as a result of the diet and levels of
plasminogen activator inhibitor-1, a clotting agent in the blood, dropped by
72 per cent.
Dr Per Wandell, who led the study, said: "A short-term intervention with a
paleolithic diet had some favourable effects on cardiovascular risk factors.
"But one negative effect was the decreased intake of calcium (from dairy
goods), which could be a risk factor for osteoporosis later in life."
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