Ein
weiterer Sargnagel für den jahrzehntelang gepredigten Bullshit, wonach (tierische) gesättigte Fette für Herzkrankheiten verantwortlich seien und man diese durch Omega-6-haltige Fette ersetzen sollte, liefert das renommierte British Medical Journal.
Es mehren sich auch durch diese Studie die Indizien, dass von wirtschaftlichen Interessen, Dummheit und Bad Science geleitete Forschung und Ernährungsberatung eine zentrale Verantwortung für die Prevalenz solcher Krankheiten hat.
Wenn Euch euer Hausarzt demnächst raten sollte, ihr sollt tierisches Fett meiden und statt dessen omega-6-haltiges pflanzliches Öl zu Euch nehmen, wißt Ihr, welchen Finger Ihr ihm zeigen solltet... .
Zitat:
New analysis of missing data casts doubt on diet-heart advice
Dietary advice about fats and the risk of heart disease is called into question on bmj.com today as a clinical trial shows that replacing saturated animal fats with omega-6 polyunsaturated vegetable fats is linked to an increased risk of death among patients with heart disease.
The researchers say their findings could have important implications for worldwide dietary recommendations.
Advice to substitute vegetable oils rich in polyunsaturated fatty acids (PUFAs) for animal fats rich in saturated fats to help reduce the risk of heart disease has been a cornerstone of dietary guidelines for the past half century. The most common dietary PUFA in Western diets is omega-6 linoleic acid (n-6 LA for short).
(...)
The researchers conclude that recovery of these missing data "has filled a critical gap in the published literature archive" and that these findings "could have important implications for worldwide dietary advice to substitute omega-6 linoleic acid (or polyunsaturated fatty acids in general) for saturated fatty acids."
In an accompanying editorial, Professor Philip Calder from the University of Southampton says the new analysis of these old data "provides important information about the impact of high intakes of omega 6 PUFAs, in particular linoleic acid, on cardiovascular mortality at a time when there is considerable debate on this question."
Calder says the findings argue against the "saturated fat bad, omega 6 PUFA good" dogma and suggest that the American Heart Association guidelines on omega-6 PUFAs may be misguided. They also "underscore the need to properly align dietary advice and recommendations with the scientific evidence base." (...)
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Aus der
Originalstudie
Zitat:
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Conclusions Advice to substitute polyunsaturated fats for saturated fats is a key component of worldwide dietary guidelines for coronary heart disease risk reduction. However, clinical benefits of the most abundant polyunsaturated fatty acid, omega 6 linoleic acid, have not been established. In this cohort, substituting dietary linoleic acid in place of saturated fats increased the rates of death from all causes, coronary heart disease, and cardiovascular disease. An updated meta-analysis of linoleic acid intervention trials showed no evidence of cardiovascular benefit. These findings could have important implications for worldwide dietary advice to substitute omega 6 linoleic acid, or polyunsaturated fats in general, for saturated fats.
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Dazu auch - sehr pointiert -
John Briffa in seinem Blog:
Zitat:
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You may wish to take this study and the authors’ conclusion and wave them under the face of anyone suggesting that you need to swap ‘deadly’ butter for ‘healthy’ margarine or vegetables oils. There is no good evidence that this is beneficial to health, and there never was. If fact, we have at least some evidence that this oft-touted nutritional strategy actually jeopardises health and life itself.
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