Det är inte klarlagt.
"At this time, research on how specific saturated fatty acids contribute to CAD and on the role each specific saturated fatty acid plays in other health outcomes is not sufficient to make global recommendations for all persons to remove saturated fats from their diet. No randomized clinical trials of low-fat diets or low-saturated fat diets of sufficient duration have been carried out; thus, there is a lack of knowledge of how low saturated fat intake can be without the risk of potentially deleterious health outcomes. Although the removal of particular foods from the diet can be accomplished quickly, the removal of all saturated fats or particular saturated fatty acids from foods cannot be accomplished quickly by the agricultural community. This will require modification of existing foods and changes in policies to improve health, which in turn will require integration of nutrition needs with economic growth and development; agriculture and food production, processing, and marketing; health care and education; and changing of lifestyles and food choices by individual consumers. It requires years to change the course of commodity manipulation and to make drastic changes in the food supply. Before such implementation can be achieved, all food sources of specific saturated fatty acids must be accurately identified and quantified, the core commodities will need to be changed at the level of production, agricultural processes will require new approaches and procedures, and food formulations will need to be changed. The question remains, What is an appropriate amount to which saturated fatty acids in the diet can be lowered for optimal health? Before recommendations are made to further lower the content of these components in the food supply, should we not wait until scientific evidence clearly shows that this is the healthiest direction to take?
Because of the paucity of scientific understanding of the role of specific fatty acids in humans beyond the effects on total and LDL cholesterol, research on the effects of specific fatty acids in a broader health context should be viewed as a clear research priority. Given the varying health status of much of the developed world, it would also be appropriate to explore these effects in a range of human metabolic phenotypes, including persons with various body mass index values, persons with insulin resistance, and persons with chronic inflammation. Finally, the scientific community not only is recognizing the interindividual variation in dietary response and health but is also building the tools to measure it. Therefore, the influence of varying saturated fatty acid intakes against a background of different individual lifestyles and genetic backgrounds should also be considered."
Am J Clin Nutr. 2004 Sep;80(3):550-9.
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