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Laoch comments on Outside the Laboratory - Less Wrong
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In that case, wouldn't you say that anyone who suffers from akrasia (which is pretty much everyone at some time) has a failure of understanding on a gut level? My subconscious mind doesn't seem to understand that it's a bad idea to eat a box of pizza every night; so I have to rely on my conscious mind to take charge, or at least try to.
Occasionally even health-conscious people eat stuff like pizza, which is arguably the equivalent of buying the occasional lottery ticket. In each case, the conscious mind is aware that one is doing something counter-productive. In the case of a lottery ticket, one is enjoying the fantasy of being free from his day-to-day financial worries,even though there is essentially zero chance of actually succeeding. In the case of pigging out, one is enjoying the feeling of being stuffed with tasty food, even though there is essentially zero chance that there will be a food shortage next week which will justify his having pigged out.
What's wrong with healthy people (in particular, gluten-tolerant) eating pizza?
It's high carb? It gives me heartburn (probably gluten intolerance?). If you are trying to go on a cut i.e. want a six pack it's a bad idea.
And why is that a problem? You seem to be implying that a low-carb diet is The Only True Way which looks doubtful.
The claim was about "health-conscious" people, not body-image-conscious.
Because of the negative effects it has on your insulin response, leading to pancreas fatigue and type 2 diabetes.
I was under the impression that a low body fat percentage was healthier. Perhaps I'm wrong. I must admit my beliefs are influenced by aesthetics. I'd bet on low abdominal fat been the optimal via a low-ish carb diet.
We know that low-carb is effective at losing weight. The jury is still out on whether low-carb is healthy in the long term.
Similarly, while it is clear that being obese is unhealthy, I don't think that there is any evidence to show that being very thin (having low body fat %) is healthier than being normal.
See here, though it uses BMI rather than body fat %.
Yes, and it does show the expected U-shaped curve.
BMI is pretty useless as an individual metric, though.
That was the point. (I also incorrectly remembered that the minimum was shifted a bit to the right of what's usually called “normal weight”, i.e. 18.5 to 25, but in the case of healthy people who've never smoked it looks like that range is about right.)
Depends on what you mean by normal?
The usual: 10-20% BF for men (you can have less if you're actually an athlete), 20-30% for women.
Oh you mean healthy not normal? Few men are at 10-20%.
I mean "normal" in the sense of "not broken", NOT in the sense of "average".
Having said that, about 20% of US men under 40 have less than 20% body fat. Source
In which case you should take “healthy people” to mean those who are not trying to go on a cut because they already have a six-pack.