Fiber, dietary whole grains

An increase in consumption of whole grain flour products is one of the nutritional aims in Norway. The high content of dietary fiber or factors associated with it, however, present in bran and whole grain flour, may interfere with the bioavailability of minerals as suggested by several authors ( , 7, 8),... 

Kellogg s Special K Blueberry Cereal (specialk.eom/ /products)— provides whole grains with dried blueberry pieces and puree in a cereal fortified with excellent percentages of daily values for dietary fiber, vitamins A, C, and D, six B vitamins, and four essential minerals other superfruits featured are strawberry, raisin, cranberry, and elderberry in cereals or nutrition bars... 

When taking this medication, the client should increase dietary fiber, such as whole grains, fibrous ftuits, and vegetables. 

Whole grains are good sources of dietary magnesium, fiber, and vitamin E, which are involved in insulin metabolism. Relatively high intakes of these nutrients from whole grains may prevent hyperinsulinemia. Whole grains may also influence insulin... 

Dietary factors, such as fiber, vitamin B6, and phytoestrogen intake, and lifestyle factors such as exercise, smoking, and alcohol use, which are controlled for in most epidemiologic studies, do not explain the apparent protective effect of whole grains... 

Several mechanisms have been proposed for the protective action of the dietary hber found in whole grains. Increased fecal bulk and decreased transit time allow less opportunity for fecal mutagens to interact with the intestinal epithelium. Secondary bile acids are thought to promote cell proliferation, thus allowing increased opportunity for mutations to occur and abnormal cells to multiply. The effect of fiber on the actions of bile adds may be attributable to the binding or diluting of bile adds. 

Liu, S., Whole-grain foods, dietary fiber, and type 2 diabetes searching for a kernel of truth. Am. J. Clin. Nutr. 77, 527, 2003. 

Nuts are a good source of dietary fiber. After cereals, nuts are the plant food highest in fiber, followed by legumes, whole grain bread, fruits, and vegetables [27]. Yet, this positive attribute of nuts is not well-known or publicized despite the fact that most populations globally do not consume the WHO recommended level of 25 g of fiber/d [28]. A standard serving of tree nuts provides 5%-10% of daily fiber requirements [24]. 

---