Denise Minger wrote this great article about the flaws in the new USDA dietary guidelines. It's up on her blog, Raw Food SOS.
She comes to this conclusion:
"Although some of the new USDA guidelines are just watered-down common sense ('be more active, eat less junk food'), a few of the recommendations are downright harmful: the idea that polyunsaturated fats are universally healthy, the perpetuated fear of saturated fat, the encouragement of low-fat dairy, and the notion that everyone needs a carb-heavy, grain-based diet to thrive. Unfortunately, the 2010 recommendations parrot the same misinformation that’s been keeping Americans fat and sick for so long—all stemming from a flawed understanding of cholesterol and disease, as well as decades of research biased to please the gods of Conventional Wisdom.
Bottom line: These guidelines will guide you alright—straight to your spot in the pharmacy line. Look elsewhere for advice if you’re serious about your health."
I highly recommend checking out this very informative article!