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Myth #3, fasting causes your blood sugar to drop, truth or lies?

December 27, 2017

Myth #3, fasting causes your blood sugar to drop, truth or lies?

This is a great question, when someone ask me at the gym, how did you both get in such good shape at your age LOL, I tell them I have 2 protocols I do, electrolyzed reduced water for flushing out inflammation and help with recovery after a hard training session, and intermittent and extended fasting, the most common answer I get from that person is, I can’t do that I have to eat breakfast and eat every 2 hours or my blood sugar will drop, this is the typical answer I get.

We need to set it straight, when doing intermittent and extended fasting this does not actually happen.

The body tightly monitors your blood sugar level, you have multiple internal mechanisms that will keep you blood sugar at the proper level to function.

When you are doing intermittent and extended fasting, your body begins to break down glycogen (glucose) in the liver to provide glucose.

Think about this, while you are a sleep are you eating every 2 hours, of course not, you are fasting, do you wake up every morning feeling shaky and sweaty because your blood sugar has dropped, I don’t think so, you have just done a fast.

This happens every night as you sleep, the body most have a way to keep blood sugars normal as you fast overnight, does this make sense?

Say you do a fast for longer than 24-hour to 36-hours, the glycogen in your liver and muscles that are stored there for energy become depleted.

The body then takes your stored fat and starts to break it down using a process called gluconeogenesis, using glycerol that is a by-product of the breakdown of fat.

What does this mean, you do not need to eat glucose (food) for your blood glucose levels to remain normal, research has shown this to be true decades ago.

Those of you that think if you were to not eat breakfast before you work out, would cause your blood sugar to drop and then you would pass out, the process called gluconeogenesis proves this is also false.

How about those smart healthy people out there that may know more then the average person about the human body, like that medical professional or that health professional that has all those fancy expensive certification, who will tell their patient or client, who asked a question, is intermittent fasting ok for me to do? No, you should not do intermittent fasting it is unhealthy for the brain, you need glucose from the food you eat for your brain cells for energy “wrong”.

The human body is amazing, the brain also uses ketone bodies- particles that are produced when fat is metabolized- as energy. This helps us to function optimally when food is not available like when you are doing an intermittent or extended fasting, ketones provide the brain most of the energy when needed.

Think about this, if glucose were absolutely the main source for brain function. After you did say, a 24-hour or a 48-hour fast without food, when you have completely depleted all your stored glycogen, you would become a blubbering idiot as your brain will shut down, how does that even make sense.

Think about our ancestors (Paleolithic era) our intellect was our only advantage for survival during that time against wild animals. How often did our ancestors go without eating days at a time, a lot, so if glucose was the only main source of energy for our brain to function, humans would have become extinct long ago.

The essential point is, when food (glucose) is no longer available, the body switches over to burning fat for energy, the by-product of this is ketone bodies, this is where it gets interesting to the researchers, ketones can cross the blood-brain barrier to feed the brain cells, up to 75% of the brain’s energy requirements can be from ketones, how cool is that.

Conclusion: Do we have to eat food (glucose) for our brain to function efficiently, not really. When the glucose you have already stored away in the form of body fat and what the liver will produce in gluconeogenesis, you have plenty of fuel when you have no food is available, if you were to do a extending fasting it still will not send blood glucose levels dangerously low.

Research has proved this, check out Dr. Jason Fung 2 books, The Obesity Code and The Complete Guide to Fasting all the research you need is in these 2 books.

Bill & Emily Mabry 6A1
Weight Loss Coach/ Strength and Conditioning Coach/CMHR
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