A Calorie Is A Calorie, Is A Calorie, Is A Calorie...
Monday, September 7, 2009 at 3:45PM
My renewed interest in caloric consumption started with my review of my first year on the all carnivorous diet. I gained about ~15 lbs, by not counting calories and stuffing myself at each meal (when I started, I ate 2-3 meals). It's unclear to me whether this weight was put on because I was eating too much protein, too much fat, too much food (too many calories) or or even too many meals (fasting has a fat burning hormonal effect).
There are so many different schools of thought on caloric consumption (sometimes called "volume", other times called "too much fat") that entertaining the idea enters the mind into a world of cerebral gymnastics. Now, I want to be very clear that I believe that hormones are driving fat accumulation, not the quantity of calories, but the question I'm interested in is:
When insulin levels are low, what is responsible if fat is still not being mobilized?
Who is to blame here? Is it volume (calories), meal timing, or a macro nutrient? And if it's a macro nutrient, which one?
We learned from GCBC that whatever makes you fat also makes you sick. This conversation is extremely relevant to obtaining optimal health. Here are some accepted theories as well as points of contention when it comes to what the body does with specific macro nutrients.
- Carbohydrates are converted into glucose and raise blood sugar potentiating the release of insulin.
- Protein is converted into amino acids. When there is a long term deficit of glucose, gluconeogenesis is initiated, which is the manufacturing of glucose from amino acids. Short term deficits of glucose are covered by dipping into your bodies store of glycogen (stored glucose) in your liver, not by breaking down proteins. (thanks to Dr. Kurt Harris of The PaNu Weblog - read the comments for more info). The second school of thought on the protein to glucose issue is brought to us by my good friend Lex Rooker. Evidenced by his meticulous BG tracking in his wildly popular journal, Lex's data showed a different story on the conversion of protein to glucose. Lex's self experimentation indicated that glucose rises higher after eating a meal containing more protein than when eating a meal containing less protein. This rise in BG happens even when blood glucose before the meal is already at 100 mg/dl. This would suggest that at least some protein is converted to glucose independent of blood glucose levels, glycogen stores, or a "metabolic emergency". For all the details, make sure to stop by the raw paleo forum and give his incredible journal a read.
- Fat does not have a noticeable effect on insulin. Fat can be stored independently of insulin by the enzyme Acylation Stimulating Protein (ASL) - which is influenced by insulin. A very small amount of fat is converted into glucose, but is done so inefficiently by the liver.
Let's look at some of the greats in the low carb universe and see what they think about calories (and for some, meal timing). I took all of their quotes completely out of context, mostly from message boards, so if they seem a little out of place, they are. I tried my best to represent each all-star's view accordingly. Here they are in no particular order:
Common Misconceptions,
Weight 





