> And it has failed spectacularly. Obesity rates have skyrocketed upward despite continual exhortations to cut calories. So, the proof is in the pudding.
Continual exhortations does not mean calories have been cut. The fact that it's still said so often and loudly indicates that either it's not effective, or people aren't doing it.
> us assume basal metabolism of 2,000 calories per day.
> Walking for 45 minutes might burn 100–150 calories.
> If you’ve ever watched the calorie counter on your treadmill,
>you’ve probably already noticed how few calories are actually burned
> This means that 95% of caloric expenditure is not related to exercise.
So exercising doesn't account for that much calorie burn compared to your basal metabolism. 5% is not a small number, though (when you're not high over your daily needs to begin with), and this doesn't address any effect that even minimal regular exercise might have on your basal metabolism.
I haven't read the whole thing - but based on the glaring holes in these couple of paragraphs, I find that there's not a strong case for doing so.
It also doesn't account for the people who do successfully lose weight by following this basic advice. I'm -50lbs from where I started two years ago and am about 10lbs above where current doctrine says is "healthy" for me. What did I change?
I eat larger breakfasts, a light (but not necessarily healthy) afternoon snack, no lunch and small dinner for a net of significantly less food. (I still tend to snack on unhealthy things after 10pm some nights). I started walking (1.5 miles in hill country x 3-5 days. Less often lately).
That's it. I still eat like crap. I still drink mostly heavily-creamed coffee, diet soda, and sweet tea.
Perhaps you can see how I'm skeptical when I the opening paragraphs discount the two most significant but minor changes I made -- being told it doesn't work when it clearly has does not inspire confidence in the accuracy of the rest of the text.
(In a similar way that being told to cut calories an add exercise doesn't inspire confidence in the people who have done so with no luck.)
But "for me" is the important bit. Everyone is different. Perhaps that relatively light walking kicks my basal metabolism into overdrive - I really don't know. What I do know is that I made a couple of seemingly simply changes plus the behavioral change of not eating a) when bored and b) every time I felt slightly hungry, and it worked really well.
There's a lot of crap pseudoscience in this space and there is still a lot that we don't know - which means it's not going to get better anytime soon.