I'm not sure medical science understands (well enough) the relationship between carbs/blood sugar/cholesterol and cardiovascular disease.
Well enough for what purpose?
The low-fat diet and food pyramid is probably the worst thing ever foisted on the American people. With 30 years of run-away obesity and diabetes, maybe it's time to admit failure with those recommendations.
The reality is that the people pushing those recommendations knew they were bullshit 30 years ago. How can you say they were a failure? They accomplished their given goal of pushing money towards Big Pharma and the processed foods industry at the expense of the health of the American public. We don't need a smoking gun to understand that there could have been no benevolent goal because the science did not support the recommendations. Since we live under capitalism, we simply follow the money. Who got rich, and at whose expense?
We still let cereal manufacturers pitch their wares as "heart-healthy" - what a joke.
Yes, and meanwhile the milk that goes on the cereal still carries a note about how the FDA has stated that milk from cows given rBGH is just as good as the real thing and you can't tell the difference, even though it's been shown in court since that it isn't and that you can tell the difference, for fear of a lawsuit from Monsanto. It's crony capitalism all the way down.