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Aug 16, 2011 at 8:48 comment added rxmnnxfpvg As Jeremy Stein says, your 40/30/30 ratio is wrong. It's 40/30/30 calories, which means for a 2000 calorie diet, 800 calories from carbs, 600 from protein, and 600 from fat. Since you get 9 calories to the gram for fat, and 4 for carbs and protein, that means: 800/4 = 200g carbs, 600/4 = 150g protein, and 600/9 = 67g fats.
Aug 12, 2011 at 12:20 comment added Berin Loritsch Bottom line, is that carbs are necessary, but not in the quantity most people eat them.
Aug 12, 2011 at 12:19 comment added Berin Loritsch The major failing of the "food pyramid" is that they don't count starchy vegetables and fruits as carbohydrates. You could follow the USDA's guidelines and have 80% carbohydrates. I think we can all agree that would be disastrous to our waistbands. I also don't believe for a minute that our ancestors did not have any carbohydrates at all. They are contained in fruits and vegetables which they did eat. You can say that our ancestors did anything a million years ago and no one could support or deny it.
Aug 12, 2011 at 11:28 comment added Fattie @An_Ant Hi Berin, the amazing detailed info you provide is epic, but one thing, you mention the "40% carbo" idea that was popularised by the USA govt's "food pyramid" poster they had an ad agency create in 1992. The problem is, I'm sure you agree that this is a current hotly controversial issue. Half of current scientific opinion violently believes we should eat an incredibly large amount (40%!) of carbohydrates, half of scientific opinion believes we should eat no carbohydrates (as we have for 2 million years). It's a tough issue and difficult to present as a fait accompli.
Aug 11, 2011 at 19:33 comment added user1653 @Berin Loritsch: Thanks for answer! Although I don't calculate what I eat to a gram (because I'm kinda skinny and would be happy if I could gain some weight), I'm pretty sure I've balanced my diet (in line with your recommendations) all this time with additional minerals and vitamins in pills also. And I certainly don't have any problems with junk food - I prefer healthy food by far. --- I'll edit my question to try to emphasize core of my problem a little more...
Aug 11, 2011 at 18:18 comment added Jeremy Stein You've got the 40/30/30 ratio wrong. That's calories, not grams. A 2000 calorie diet should be 200g carbs, 150g proteins, 67g fats.
Aug 11, 2011 at 18:10 history answered Berin Loritsch CC BY-SA 3.0