Quote:
Originally Posted by Meme#1
Maybe our bodies are just more efficient at retaining energy...maybe that was a desirable trait before food was constantly readily available.
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It truly was a desirable trait when there were so many times of famine. Historically, winter was always a very lean time for food availability, especially if the fall harvest was not good. It was advantageous to have genes that slowed your caloric usage, so you'd make it through the winter, even more advantageous if you had genes that allowed you to survive a couple years of famine.
Quote:
Originally Posted by mike_d
Just looking at people lately, and noticing there must be a whole lotta bad genes in Americans.
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If you look back at US history, think about the fact that our population came mostly from other countries. Many of them came to the US during times of famine in their countries of origin, or during times of persecution, when they were reduced to near famine levels of food supplies.
All countries have people who have come from ancestry that survived lean/famine times, so there's a good chance that most people in the world inherited the genes that prompt them to eat as much as they can when it's available, in order to survive a possible famine.
They were desirable genes to have - good genes throughout most of recorded history, but genes that have backfired on us in these times of plenty, especially in the US. It's also happening in other countries that are going through economic changes that have dramatically increased their food availability.
There have definitely been famines that have affected certain countries in recent decades, and many lives have been lost in those countries due to starvation. Not everyone starves to death during a famine of course - only those who haven't managed to put on enough weight during the times of plenty, while having the genetic ability to draw on that weight as slowly as possible during the times of famine.
The Naturally Thin Nicky's of the world don't seem to have those genes - or if they do, they're so weak as to not prompt them to overeat during the times of plenty, in order to survive any times of low food supply. In a famine situation, they wouldn't survive, simply because they've never been able to muster up enough appetite to consume any excess at all to help see them through a time of famine.
Because the Naturally Thin Nicky's of the world don't ever gain weight, they also have never forced themselves into an artificial famine state (i.e: gone on a diet), so their bodies don't even have a chance to learn to conserve calories. Those of us who gain weight and find it difficult to lose do so because our genes are determined that we must take in and conserve extra to survive famine, and that determination is enforced by our dieting (artificially created famine state) to conserve as much energy as possible in case of famine (or another weight loss diet).
At least with LC, we don't need to create that artificial famine state to lose weight. We can still eat a very adequate amount of calories, and lose the weight we gained by eating starches and sugars. Or at least some of it, since this works better for some people than others, and probably depends a lot on how much you gained, what age you gained it, how it affected your metabolism, how strong those calorie conserving genes are, and whether or not you taught your body to conserve even more calories by going on calorie restricted diets regularly before going LC, and possibly other factors as well.