Holy crap people, how do you think the energy gets into your food? Please, please go read the link I posted above to get an understanding of how energy is stored in the chemical bonds in particular molecules.
Sorry Owly, "energy" has always been a tricky concept for me to fully grasp. I understand that energy is stored in chemical bonds and released when the bonds are broken, but that still doesn't do much for me in really "getting" what energy is or how it is used/transfered/whatever in the body. Physics and chemistry are hobbies of mine, not my expertise. I think I can make sense of the link you posted, but it's going to have to wait until tomorrow when I'm awake.
Thanks for posting though, I hope it ends up being as informative as it appears.
Fatty Acid Oxidation
Seems like an obvious metabolic advantage for physical activity involving the aerobic cycle.The oxidation of fatty acids yields significantly more energy per carbon atom than does the oxidation of carbohydrates. The net result of the oxidation of one mole of oleic acid (an 18-carbon fatty acid) will be 146 moles of ATP (2 mole equivalents are used during the activation of the fatty acid), as compared with 114 moles from an equivalent number of glucose carbon atoms.
No need to count calories, people way smarter than any of us already had this figured out years ago...
Here's what people should be concerned about...Rubner's observations proved that, for a resting animal, heat production was equivalent to heat elimination, confirming that the law of conservation of energy, implied in Lavoisier's early experiments, was applicable to living organisms as well. Therefore, what makes life possible is the transformation of the potential chemical energy of fuel molecules through a series of reactions within a cell, enabled by oxygen, into other forms of chemical energy, motion energy, kinetic energy, and thermal energy.
Insulin and leptin are hormones, right?Different signals dictate how cells can adapt to each situation, such as hormones, which may exert powerful effects by switching key enzyme activities in a matter of seconds, or how they may modulate gene expression profile, changing the whole cell metabolic profile. We must therefore understand all metabolic pathways as integrated events controlling energy regulation and conversion
Last edited by js290; 05-15-2012 at 08:49 PM.
I'm sorry js, but we can't take you seriously until you first explain the metabolic pathway(s) by which energy is converted to fat within the body.
Try to keep up.
Dude, if you don't even understand how energy is stored in the body through the basics of metabolism, you've lost pretty much all credibility in my eyes when you make your claims about how metabolism works. You saw ATP in there, seized on it, and ran with it, spamming the same link you always use when it's clear you don't grasp the underlying fundamentals.
You in fact just quoted the basic explanation that answered your question about how we store energy--it's stored in potential chemical energy form. I answered your series of questions and now you're acting like you're some genius for reading the article and seeing that hormones control the system. Bravo, you have some basic reading comprehension.
Whether it's fatty acid oxydation or glycolysis, the body still stores the energy in the chemical bonds in the molecules that are formed in those cycles. That is also how it stores energy. You asked how we store energy, and I provided you with an answer. We can't turn energy into matter, but we can store energy in molecules via endothermic reactions. That energy can be measured in calories. Whether or not you think CICO is bunk, energy is still part of the process. If your body could not store energy, you'd be in serious trouble. Metabolism is essentially the process of breaking down food for energy and then either storing it or using it.
The reality is that you cannot store more energy than you consume, and your body will find ways to store excess energy. That's how the metabolic system works. You measure energy in calories. Therefore, calories are relevant.
Now, your system might be messed up. Your leptin signalling might be busted, leading you to eat more than you need. Your insulin might be messed up, creating issues with blood glucose regulation. But calories are still involved.