I have a question. The Jews in the concentration camps were fed approximately (everyone from what I gather that was doing specific labor in the field), 1200 to 1500 calories per day on average. The ones that were not laboring in the field, (basically in door type of work), we given 800c per day, and they too, became mere bones after time. Interesting how the starvation mode may have worked in this environment).
There may be some exceptions here (not being fed for example), and they were virtually bones. Be interesting to learn how the starvation response and adaptive system of the body reacted in this environment. What do you think, Steve? If there was an affect, it may not have lasted long, and pushed to a no choice point?
The physiological survival mechanisms that kick in, in response to starvation or even dieting do not STOP weight loss completely. I mean, they can, given enough food is being eaten. One outcome of the starvation response is a reduction in metabolic output. So, if your metabolism slows, yet, you are still eating *enough* food, you are essentially creating a new, lower maintenance level where no weight will be lost or gained.
This is the classical occurrence we see in most people who slash calories too hard. Especially with people who don't have too much weight to lose, relatively speaking.
During intense starvation, however, the metabolism never shuts down. You'd die first. Even in the Nazi camps, it is speculated that the largest slowdowns were roughly 30% from base. This means, if the metabolism slows by 30%, yet you are eating next to nothing, you would still lose weight. Sure, it is far beyond unhealthy and no way to *diet* but when forced to, the body will still survive.
Again, people think the starvation mode shuts down your metabolic systems. It doesn't.
You might want to check out the Minnesota Starvation Experiment.