Poimintoja NNR2004:
Ai että mikä on NNR2004... se on itseasiassa aika paljon... siihen perustuu mm lähivuosien suomalaiset viralliset ravitsemis suositukset... edellinen oli NNR1996
(projektin ryhmässä on olleet suomesta mukana mm Antti Aro, Mikael Fogelholm)
"A number of short- to medium-term studies have shown a transient increase in fasting triglyserides and decrease HDL-cholesterol levels after introduction of high-carbohydrate diets."
"Although there is no absolute need for food carbohydrates to sustain life, dietary supply of carbohydrate is essential to avoid ketosis. The US Food and Nutrition Board estimated the average requirement of (glycaemic) carbohydrate to 100g/d for children and boys and girls up to 18 years, as well as adults, based mainly on data regarding carbohydrate utilisation by the brain. This corresponds to about 15-20E% in adult females and males, respectively."
"Low-carbohydrate/high-fat/high-protein diets have been increasingly advokated recently and are very popular in the media, without detailed evidence of their efficacy or safety. A systematic reviev (89) concluded that there is insufficient evidence to make recommendations for or against the use of low-carbohydrate diets. The safety of long-term adherence to such diets has not been documented. Among the published studies, participants weight loss while using low-carbohydrate diets was principally associated with decreased energy intake and increased diet duration but not with reduced carbohydrate content. On the other hand, increasing protein content to 20-25E% while keeping a low fat/high carbohydrate content may assist weight reduction."
"There is no absolute need for food carbohydrates to sustain life, provided that adequate amounts of protein, for
de novo synthesis of glukose, and fat are consumed. Only cells in central nervous system, red blood cells and some other cells dependent on anaerobic glycolysis have an absolute requirement for glucose. At prolonged deficit of glucose brain cells can adapt partially to utilise fat-derived metabolites,
i.e. Beta-hydroxibutyric acid and acetoacetic acid. A very low carbohydrate diet, however, result in a chronically increased production and plasma level of these acids, referred as ketosis, and absence of glycogen stores, with adverse effects on high-intensity energy production by muscles. Other possible adverse effects of diets very low in carbohydrates are bone mineral loss, hypercholesterolaemia and increased risk of urolithiasis, but such effects are not well documented."
No juu ihan oikeudenmukaista ei tietenkään ole laajojen tekstien seasta erottaa tuollaisia poimintoja mutta.... tuollaistakin löytyy 400 sivuisesta NNR2004:stä.
Toivottavasti tulla ei pahoja kirjoitusvirhekömmähdyksiä ole... kaksisormijärjstelmä huonoilla silmiklaseilla..
Jos ihan oikeasti haluaa
tietää mikä on virallista ravitsemis suositusta kannattaa tuo kirja lukea. Sanoisin että se saattaa hiukan "avartaa" mailmankuvaa silläkin sektorilla... tuo kyseinen paperikasa on samalla melkoinen tietolähde lukuisine viitteineen. Ja teoriaakin on ihan riittämiin tavanomaisiin tarpeisiin.
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