Hi. I am putting together nutrition guidelines based on paleo concepts. I am trying to debunk this CW: "Complex carbohydrates are broken down more slowly in the body, help provide more energy throughout the day and make you feel fuller a longer period of time. Grains also contain fiber, which has been proven to be good for the heart and promotes proper bowel function."
I would like to find articles (with proper references) that show that fiber found grains is different from that in fruits/vegetables, and any other articles that oppose the USDA-based guideline above. Thanks.
Well the 'provide more energy throughout the day', which is a subjective marketing term, but complex carbs are broken down more slowly than simple carbs and grains do contain fiber.
You have to look at insoluble vs soluble fiber (non-viscous vs viscous), as well as resistant starches, waxy starches, amylose:amylopectin ratios, and amylopectin patterns.
The 'good for the heart' part about fiber comes from the fact that soluble fiber binds bile acids and reduces cholesterol, therefore anything that lowers cholesterol must be good for the heart.
To find articles google scholar is the best place to start. You may be better off suggesting that wheat causes an immune response in all people, which may be a bad thing. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1954879/
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