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Uncovering the Atkins diet secret
"J Stutzmann" wrote in message ink.net...
Thermodynamics --- a law we can't live without! [grin] It's not a law but a collection of laws. Thermodynamics is about the aggregate statistical behaviour of systems, assuming a Boltzman distribution for the energy in the states of the system. You cannot reconstruct the microphysics of a system starting with thermodynamics. wrote in message news:slbWb.19977$032.64937@attbi_s53... In sci.med.nutrition tcomeau wrote: : Maybe the lesson to be learned is that calories really have little : bearing when it comes to weight gain or loss in humans. 1) Please learn to trim quotes 2) Have you somehow forgotten the laws of thermodynamics? It is quite simple: if energy in energy out, the body will gain mass. Wow. The reverse of a nuclear explosion! There are no mass-energy conversions in chemical reactions. You gain mass because the various chemical reactions in your body that keep you alive start storing some of the mass that you consume instead of extracting chemical energy from it and excreting the mass. Now what triggers this mass storage? It isn't thermodynamics, it is the design of the the cellular chemistry and cell microphysics. Different people have sufficiently different microphysics (e.g. number of insulin receptors in their cell membranes) that assuming that one energy balance model works for everyone is absurd. One person who consumes several slices of bread or any other starchy food will respond to the induced insulin spike by producing more heat while another will respond by storing fat created from the starch (which is a collection of glucose molecules). The system of each of these individuals will obey the laws of thermodynamics but clearly the result is different. If energy out energy in, the body will lose mass. Yes, just like in the fission of Unranium nuclei.... |
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