As usual the facts are messier than any single assertion will ever be, even my own. Here's an interesting review, more or less reflecting "the state of the art

As usual the facts are messier than any single assertion will ever be, even my own. Here's an interesting review, more or less reflecting "the state of the art": Okręglicka K, Health effects of changes in the structure of dietary macronutrients intake in western societies. http://www.ncbi.nlm.nih.gov/pubmed/26024397 http://www.ncbi.nlm.nih.gov/pubmed/26024397