on December 21, 2015
at 11:06 AM
Probably not. Mark Sisson has a nice carb intake fat-loss chart out there, the fat burning zone is limiting carbs to 50-100g/day, after that it gets harder.
But the thing is if you go low carb for very long it will increase your stress levels, this isn't a problem at first, but in the long term it becomes a huge deal. If you also throw in Intermittent Fasting along with Very Low Carb, you'll get yourself in trouble, and the stress level will prevent fat loss.
This is cortisol is signaled in both low glucose and stressful situations, and it in turn signals the liver to create new glucose from protein - this is called gluconeogenesis. This process will also raise ammonia levels in the blood, which then, your liver has to dispose of.
This is an evolutionarily important mechanism, and is something you shoudl excercise every so often so that it's there when you need it (just like switching your mitochondria to fat burning). However, in the long term, you don't want to always have this turned on, so it's useful to have some carbs, but limit the amount.
If you're planning on fasting, you should keep your carbs higher. If you're planning on going low carb, don't also fast at the same time. Ideally, switch your carb intake to closer at night, and keep it to starchy sources rather than fruit that's high in fructose (especially avoid all artificial sweeteners, particularly Agave Nectar which is even worse than HFCS.) Look to stuff like sweet potatoes, yams, batatas, white potatoes, carrots, parsnips, turnips, beets (non GMO, organic) and maybe a cup or two of berries at most.
Get plenty of leafy greens, you'll need them for micronutrients, do not count them as part of your carb intake because any official carb counts for these is mostly fiber which is used to feed your gut flora and won't be used for energy.
The reason you want them at night is because carbs will calm down stress levels, stopping gluconeogenesis, and this way it won't interfere with sleep.
If you have short or interrupted or poor quality sleep, that will raise your insulin resistance and raised insulin, despite resistance, will absolutely prevent fat loss.
Make sure your workouts are limited to HIIT style, and limit cardio to just that, and then do regular strength training with weights or machines. The more muscle you build, the quicker you'll be able to burn off excess fat because muscle uses more energy when at rest.
Protein wise, it's best to get it from grassfed/pastured/organic meats and wild caught seafood, eat 3 palm sized portions daily. Avoid eating fats and carbs together and the carbs will signal insulin which will also store any circulating fats from your meals.