What a buzzword this has become. Not only is our nation (world even) getting fatter by the day...
Now marketers are using scare tactics such as the dreaded starvation mode to strike fear in people trying to diet. What's next... broccoli makes you fat? As if there wasn't enough confusion and conflicting data out there already. But oh yea, wait... that confusion is what drives sales!
In actuality, there is some truth to what 'experts' are calling the starvation mode. But there's a whole lot of fiction and ignorance thrown into the mix as I see it today.
Can anyone here actually tell me what the starvation mode is?
My bet is most of your responses would look something like this:
"It is when you don't eat enough and your body thinks it's starving. When you reach this point, your body starts storing everything it can get its hands on as fat and breaks down your muscles."
Amirite?
Here are some myth busters in relation to the above quote:
* The starvation mode is not an event. It's not a mode either. Rather, it's a continual adaptation/readjustment of the bodily systems associated with metabolism in response to dieting and weight loss
* Said adaptation takes place regardless of the size of a calorie shortage (deficit). Diet using a very small deficit and the same adjustments will take place had you dieted using a more aggressive deficit. It will simply take longer for this to happen. In addition, there is no set level of caloric intake that triggers the starvation mode universally.
* You're body will not store fat if it is in a caloric deficit. Granted, the adaptation might slow down your metabolic rate. This does not mean, however, that all things you eat are stored as fat and all muscles you have will be lost. A deficit is a deficit no matter how you slice it and unless your body is magic, you're not going to be able to create something out of nothing (store fat without an excess of calories).
So here's the low down in simplistic terms...
The starvation response is simply a fancy way of labeling the adaptations that take place in our bodies in response to a shortage of energy.
The adaptations involved primarily exist to slowdown our metabolisms. The slowdown has a lot to do with the drop in body mass (specifically fat) associated with dieting. It also has to do with with hormonal shifts in response to the energy shortage.
Namely, our bodies don't want to be lean. Being lean goes against every natural inclination it has to survive as a species. We are a species that has evolved over many, many years. Deep in our past, a continuous and abundant food supply was something dreams were made of. Food was scarce. Knowing this, when early man would find food, he would eat a lot. His goal was to store fat which would help ensure his survival during the winter months when food would be nonexistent. Fat was a savior to these people.
We all know fat is a storage depot of excess energy. Very few of us, however, will ever be stranded on an island with no food and be forced to survive off of said storage. Our ancestors though, used this as their life blood for thousands of years which in turn, has influenced our genetic hardwiring.
The adaptations associated with dieting and losing weight, which we collectively call the starvation response or starvation mode, is simply a product of this genetic hardwiring.
In relation to plateaus... a plateau can stem from the starvation response. However, not all plateaus are products of the starvation response, so they are not one in the same as many believe. It's a given that a reduction in body weight will lead to a reduction in caloric requirements. At times though, it seems that caloric requirements drop further than weight. Put differently, in some instances it seems that what should in fact be a caloric deficit given your stats is actually maintenance or worse, a surplus. In these instances, the starvation response might be playing a role in the plateau.
It's also important to note the response is not universal to all dieters. It depends heavily on things such as genetics, sex, body fat and other stats, etc. With that in mind, obese people don't have to worry so much about metabolic slowdowns relating to the starvation response. They have much more room to wiggle, so to speak. If they find that they're plateaued, it's more likely stemming from something besides metabolic 'disruption.'
A huge regulatory signal that keeps your body out of "The Horrid Starvation Mode" is body fat. If you're fat, your body knows it for the most part and the adaptations we speak of from above are not something to be concerned with at the time.
However, if you're 500 lbs and you drop to 350... sure, starvation mode isn't something you need to concern yourself with but you still have to adjust your caloric intake to account for the giant loss in body mass.
All this said, the starvation mode is with any of us who are losing weight. There's no way around it. This certainly doesn't mean you shouldn't diet. It does mean, though, that you should manage your expectations appropriately and use logic and reason to navigate your way through losing your excess weight. Understand that weight loss is not a linear phenomenon. You can't set calories at X and expect Y amount of progress each and every week.
There's no doubt that these survival mechanisms built into our genetics play more of a role when we're lean trying to get leaner. When you're closer to your goal weight, there are some 'things' you can do to aid the process such as refeeds and carbohydrate cycling. This is beyond the scope of this thread though.
Hopefully this puts all the mysticism to rest.