Understood, but we are talking multi-national dogma (based on Keye's 'cherry picking') that has changed the world's health. That's a pretty big deal.
You say that you read all the latest diet books but have you read the actual papers concerned with the so called cherry picking?
The allegations of cherry picking usually revolve around a graph published in 1953,
Here is the original paper
http://www.epi.umn.edu/cvdepi/wp-co...clerosis-A-Problem-in-Newer-Public-Health.pdf
Here is the one critical of the original graph, comparing it with 22 countries of a later date.
http://thescienceofnutrition.files....he-diet-and-mortality-from-heart-disease1.pdf You may note that the correlations are still significant even with 'all' the countries.
. (
it is an important paper on the methodology of this type of research; it started the discussion leading to guidelines on what defined causation and hence for example pronouncements on smoking and cancer * )
Here a blogger (with post grad qualifications in nutritional science , a researcher at one of the most important labs for cancer research) explains and shows how a lot of people have just copied this idea without reading the papers. (the internet echo chamber)
http://thescienceofnutrition.wordpress.com/tag/ancel-keys/
Note this was not the Seven Countries study which started later and is still being reported.
Over the years Keys tested, and refined his hypotheses . this is how the scientific method works(did you realise that he said that trans fat was a problem many years ago?) At no time did he advocate a diet of pastries, doughnuts and pies nor even low fat cookies, highly sweetened yoghurts or magarines containing trans fats
. He advocated a Med type diet based on the Cretan diet made of fresh natural foods. high in fruit, veg, fish , small amounts of meat, some dairy, whole grains and monounsaturated fat. Is that diet the one that led to increased obesity?
Perhaps this video of Keys at work will show something of the man rather than the myth. This was just one of his studies starting in the late 1940s . It's worth noting that this was the impetus for other similar studies worldwide; in the UK , the Whitehall study. A lot of the popular books hail from the US and don't look at the evidence produced in the UK and elsewhere.
*
http://aje.oxfordjournals.org/content/early/2012/11/19/aje.kws374.full