Hey everybody - let's be nice to each other on this one, okay? Please, please, please!
There was a really interesting programme on BBC Two last Monday - Horizon's Why Aren't Thin People Fat? Here's a link about it:
http://news.bbc.co.uk/1/hi/magazine/7838668.stmGuess what they found? It wasn't a matter of the thin people having greater willpower, being mentally stronger, etc etc... Turns out - nature seems to have intended us to be different shapes and sizes.
People who struggle with their weight (like me) in another time (pre-modern) would have been the
survivors because of our bodies' efficient ability to store fat. 'Problem' is - we don't really have famine anymore in the developed world.
And yes - there's a lot of new & exciting
genetic research going on into why some people tend to get & stay fat, while others can eat what they want and stay thin (like my husband - I hate him - lol!). In fact, it seems there are a number of genetic markers that predispose one to overweight - and ones that do different things. Some that seem to make you an efficient fat-storer - yaye
. Some that seem to affect some sort of (mental? hormonal?) switch on appetite - whereas some people don't have trouble when it's time to stop eating, and others can't stop eating (and not because we're worthless & weak
).
Anyway, it was really interesting and compelling viewing! There was one experiment they showed where they took a group of chldren in preschool care (so like 3-4 year olds), they fed them all a healthy reasonable lunch & then had the children rate their fullness using pictures, then they gave all the children crayons and pictures to colour. While the children were colouring, they put out plates of chocolates and chocolate biscuits on the tables (without fanfare) and then just observed what the various children did. Some children pulled the plates of goodies over to themselves & started one-by-one devouring everything on the plate. Some children picked occasionally at things off the plate. And some just kept on colouring, as if they weren't bothered at all by the goodies, some even pushing the plate away. Ha! I know what group I'd have been in. The suggestion being that these behaviors are established well early in life.
They also talked about how weight issues may be affected by certain things while your mother carried you in utero. For instance, if your mom was an older mother and if she was overweight during pregnancy, it increases the likelihood that a child may struggle with weight issues. Gosh that sounded familiar!
Yeah, I'm not sure if it's good news or bad news - maybe it isn't even news really. They said that once you've got X number of fat cells, you've got 'em - they aren't going anywhere. They can shrink or expand in size, but you'll never have less - though your body could make more. Boo.
Also, it's easier to lose and maintain small amounts of weight loss than large amounts, which fortunately that does have some health benefits. Your body seems to have certain weight setpoints that it wants to keep you at. I've been experiencing that for about the past 2-3 years, after losing quite a bit of weight upon moving to England.
The funny thing too - some of the thin people that they overfed for the study - one guy hardly gained anything at all, despite eating
thousands more calories than he needed!
He actually put on muscle instead of fat, and they weren't supposed to exercise. (Some of the thin people said they didn't regularly exercise anyway.) Seems that his metabolic rate increased to accommodate the extra food.