Originally Posted by Wannabehealthy
I heard that the starvation mode theory is basically a myth. It may slow your motabolism slightly but not enough to make a big difference.
That's right. There is no amount of calories that's too low for you to lose weight. While metabolism does slow down when you diet, the body needs to use a certain amount of energy to maintain vital functions. When you eat at a large deficit, you may lose less weight than predicted by the "1 lb = 3,500 calories" formula, but you'll still lose.
If starvation mode as commonly understood were real, undernourished children in developing countries wouldn't be skinny. And in the first few months after weight loss surgery, people usually eat 600 to 800 calories a day and lose massive amounts of weight.