The nutritional recommendations don’t help. There’s an article by Gary Taubes, author of Good Calories, Bad Calories, that talks a little about nutrition education in the US. He points out that meat consumption is down; people followed the nutritional advice to consume less meat. Saturated fat consumption is down too; see above.
A lot of people are doing what they’re told — eat more “healthy” grains, less meat, less fat — but the average American is fatter than ever. That, to me, shows that the advice is wrong. Yeah, people might be eating too much along with it, but part of why they’re eating too much is also probably linked to what they’re eating.
In the fitness community, everyone gives completely different advice, and they’re getting completely different results. Krista of stumptuous.com has a very short, simple e-book that I found a few weeks ago called Fuck Calories that can serve as a good, if brief primer. Believe it or not, you can be very healthy and lean even if a lot of your calories are from fat. In fact, depending on how you were eating before, you can be more healthy and lean from eating dramatically more fat.
I run at about 8–10% body-fat, and my fat intake runs between 30 and 50% of my caloric intake, depending on the day. I used to be about 40 lbs. heavier, and a lot weaker. I don’t follow any diet strictly, but my eating recommendations mirror Krista’s pretty closely. She saved me the trouble of typing it now that I’ve found a place to point to when people ask me for nutrition advice.
I’d also recommend checking out Cordain’s book on the Paleo diet, or Robb Wolf’s book if you want something with more citations than Fuck Calories. High-level performance athletes are by and large not vegetarians, though they do eat a lot of vegetables. Athletes who were omnivores with good diets who have gone vegetarian have generally seen a negative impact on their performance.
Advice seems to be clustering more and more around paleo lines, with the possible exception of people who want to be 70s Big. If you want to be strong, lean, and healthy, eating paleo is the best advice I could give right now.
