sittingbison said:
you have these in the reverse order.
All food pyramids or plates (ie government recommended diet) since the early 50s recommended:
1. grain and soy carbs (12 serves) at the base of the pyramid
2 fruit (5 serves) and vegetables (5 serves)
3 dairy (3) and meat (3)
4 fats and oils (sparingly)
this is upside down, having disastrous effects on blood suger levels and insulin production leading to subsequent associated fat gain and vastly increasing rates of type 2 diabetes.
No, I haven't got it backwards. Your simplification of the process of the release of insulin is erroneous, just because there's an insulin response to carbs doesn't mean one suddenly gets fat nor develop type 2 diabetes, the issue is far more greatly complex than carbs (and hence insulin)=diabetes. Hell, you can get 90% of your diet from carbs and very normal insulin levels. HOW you get the CHO in you is the issue.
The advice has been the same because people don't follow it, and generally never have. People simple do NOT eat the recommended (previously recommend or currently) amount of fruit and vegetables. The bit of lettuce in the hamburger does not count as a serve of vegetables, nor does the fruit juice as a serve of fruit. The hot-pocket is not a serving of meat, nor is is serving of whole-grains. The things that has consistently increased (albeit not that much) is refined sugars added to foods, and animal-based protein and fats.
^ If people *actually* ate this, there would be fewer health issues (I'll try to find the recent metastudy on this which showed that pretty much no-one followed the guidelines in the first place, and never have [populations as whole, that is]).
The studies looking at wholegrain, legumes and vegetable intake have only ever shown positive benefits - especially in the treatment of diabetes.
The pyramid is outdated, and can be improved on, but to claim this is the cause of the obesity epidemic is ludicrous.
Do you see burgers on there? How about soft-drink (frizzy drink, whatever you call it)? Think those might my more of a mitigating factor on obesity than say, brown rice or wholewheat bread?
And how many people who engage in very regular exercise (4-5 times per week) suddenly develop type 2 diabetes? A greater sedentary population is a leading cause of the rise of T2D.