Canada's New Food Guide

I love this. Great job Canada!

Milk is a fantastic source of calcium, when you don’t mess with it too much. Why wouldn’t it be? It’s evolved specifically to grow mammals up to full size as quickly as possible, which includes growing a lot of bone. The issue is that we’ve monkeyed with it in a way that’s convenient for producers, but bad for consumers.

At least among the Harvard faculty, there appears to be a consensus that healthy fats are important, which the Canadian guide doesn't seem to stress that much.

https://www.hsph.harvard.edu/nutritionsource/what-should-you...

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Comments on the Harvard Healthy Eating Plate (https://www.pbs.org/wgbh/pages/frontline/shows/diet/intervie...):

INTERVIEWER: Some nutritionists have criticized your pyramid as "floating on a lake of olive oil."

WILLETT: The formal studies that had compared a more moderate fat intake as we've suggested, with low-fat diets, have actually consistently shown that people did as well or better controlling their weight on a moderate-fat diet compared to a high-carbohydrate, low-fat diet.

INTERVIEWER: Even good fats are more fattening than good carbs. So they think you're contributing to the obesity epidemic, or there's a risk of that. A tablespoon of olive oil is 14 grams of fat.

WILLETT: There are all kinds of beliefs about the amount of fat in a diet, tremendously strong opinions. What we really need is sound data, and the studies that have been done show that people actually end up controlling their weight at least as well, and usually better, on moderate-fat diets compared to low-fat, high-carbohydrate diets.

INTERVIEWER: Is it okay to get more than 30 percent of your calories from fat?

WILLETT: The evidence is quite clear that it's perfectly fine to get more than 30 percent of your calories from fat, and probably, in fact, it's even better to be getting more than 30 percent of calories from fat, if it's the healthy form of fat. ...

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EDIT: formatting

All of the confusion about what we're supposed to eat derives from this simple fact. We've got all sorts of data suggesting that this diet or this food might be good for you, but the effect sizes are too small to care about.

If you obsessively tweak your diet based on every little scrap of data, you might possibly earn yourself three or four months of healthy life expectancy compared to a diet that your great-grandmother would recognise as being sensible. It's just not worth the effort.