I guess it’s time for a new post here! And I’m sorry to say that it’s news which probably won’t rejoice any hearts here – still, better to know what it is we’re dealing with - so here goes:
The bad news:
“studies of those successful at sustained weight loss indicate that the
maintenance of a reduced degree of body fatness will probably require a lifetime of meticulous attention to energy intake and expenditure.”
Why?
Because....
“Maintenance of a ⩾10% reduction in body weight in lean or obese individuals is accompanied by an ∼20–25% decline in 24-h energy expenditure. This decrease in energy for weight maintenance is 10–15% below what is predicted solely on the basis of alterations in fat and lean mass. Thus,
a formerly obese individual will require ∼300–400 kcal per day less to maintain the same body weight and physical activity level as a never-obese individual of the same body weight and composition."
-
from “Adaptive thermogenesis in humans”, Rosenbaum and Leibel, in International Journal of Obesity, October 2010, 34 (01) s47-S55. accessed at: Adaptive thermogenesis in humans
Translation –
having been overweight/obese for a period of time re-sets how much calories your body “thinks” it needs to keep functioning, so that when you lose weight (like, a serious amount, at least 10% of your starting weight) your body “thinks” it needs that much less to live on - you will simply
not be able to eat as much as always-thin people without regaining weight.
To which, I have to admit, my reaction is
rats! and a strong temptation to stamp my feet and growl a lot. I'd
love to get to an ideal weight, and then be able to eat as freely as everybody else I know.
But... I've just plain missed the boat on that. (
sigh!) And so it goes. Probably for the rest of my life (all our lives, other ex-obesers!) I'll/we’ll need to eat lightly – and that’s just the way it is! And the benefits and fun of being healthy so much outweight the tiny pleasure of over-indulging in icecream (or whatever) that I can live with that!
(Sorry for a mild downer of a post!)