First a little background so you understand the value of the list below. We mention blood sugar and insulin several times as both are key components in the fat loss equation. Blood Sugar levels are affected by food choices, combinations and timing. Certain food items will spike blood sugar which causes insulin to rise. While insulin is not always bad; in the case of losing fat it must be kept under control as it is the most potent fat storing hormone the body produces.
Putting your body in starvation mode makes it think it needs to store fat when it gets the chance, so as soon as you start eating again, that's what it does. It changes your metabolism and it's hard to get it back to normal. Not to mention, starving yourself is hazardous to your health. Food is required for things like basic organ function. You can honestly lose more weight more comfortably and keep it off for longer by just eating right. Check out a book called the Fast Metabolism Diet, it explains everything and I have seen it work for many people.
But in today's unenlightened "believe everything you hear" age this most effective and proven approach, for some strange reason, does not seem to attract much interest. This is no more obvious when one witnesses the "technological" revolution that is happening within the fitness industry, where a newer even more ridiculous gadget compared to the one that preceded it promises to build you the body of your dreams, with little effort on your part, "in 30 days or your money back"; where a machine that does most of the work for you is touted as a suitable replacement for actually applying a modicum of effort. https://www.youtube.com/watch?v=mDHGaU_jGrQ