
Originally Posted by
Umberto
Preface :
I dont want to start a big argument. I am by no means an expert in the intricate nutrient and hormonal pathways our bodies utilize. I do know a little though, being a senior in Biological Engineering. I will attempt to simplify some of the processes that happen in a pre and post ketogenic state.
BTW
(Bulking on a ketogenic diet IMO would be a halfhazard way of bulking. I believe not taking advantage of the high-insulin induced spike caused by carbohydrates is wasteful. Also on an above maintnance diet carbs are muscle sparing and dietary protien sparing as well as providing your brain with glucose on which it runs more efficintly that keton bodies.)
Ketogenic diets do appear, after research, to be more muscle sparring that regular calorie reduced diet, as well as breaking down more adipose tissue (fat). Their are 2 distinct reasons for this.
1. On a regular calorie reduced diet your body will use blood glucose (all carbs broken down to this in body) as fuel. When this runs out it will break down glycogen in the liver for more blood glucose. When this runs out it will break down protien (muscle protien) as well as fats for energy. Protien is converted to glucose and enters glycolysis to eventually produce ATP(energy) though not efficiently at all. Fats are converted to AcCOA and enter into the citric acid cycle to make energy. FATS CANNOT BE CONVERETED TO GLUCOSE. ONLY CARBS AND PROTIEN ARE. SO regular calorie reduced dieting causes fat and muscle loss.
NOW in ketosis. You have no large amount of glucose present in your body but you have a lot more dietary fat. When there is little or no glucose your body will use fats and introduce them inefficiently into the CAC. Their will be byproducts called ketone bodies. Your body will eventually "learn" to run off of these ketone bodies only (even your brain). Once in ketosis you will only use fats for fuel (KETONE BODIES) BECAUSE FAT IS THE ONLY WAY TO GET KETONE BODIES AND PROTIEN CANT BE BROKEN DOWN INTO KETONE BODIES. LIKE THEY CAN BE WHEN YOUR BODY IS USING GLUCOSE FOR ENERGY. KETOSIS IS ANTICATABOLIC TO BODY PROTIEN.
2. Ketosis causes more rapid fat loss. Excess ketone bodies in your blood cause ketoacidosis. Which is a raise acidity level in blood. Your body tries to correct this imbalance by washing out your blood (bascically you take more water into your blood and piss it out). SO you are actually pissing out extra calories (KETONE BODIES). Not in excess but some.