a large part of it is likely as simple as this:

http://www.ncbi.nlm.nih.gov/pubmed/11229668

http://www.ncbi.nlm.nih.gov/pubmed/...ogdbfrom=pubmed

http://www.cspinet.org/new/sugar_limit.html


Fructose:

http://www.sciencedaily.com/release...80724064824.htm

http://www.ajcn.org/cgi/content/full/76/5/911


Fructose and fat:

http://ajpregu.physiology.org/cgi/c...ourcetype=HWCIT


Artifical sweeteners appear to be no bargain either based on studies with rats and that they (or a popular one) stimulate insulin secretion.