Alkoholiaineenvaihdunta on ihan mielenkiintoista. Alkoholi muistuttaa hiilareita siinä mielessä, että kun alkoholia on poltettavaksi niin keho pyrkii pääsemään siitä eroon ja polttaa sitä energiaksi tehokkaasti (ensisijaisesti), jolloin muu syöty / juotu menee taas helposti varastoon.
Alkoholin sisältämä energia ei pelkästään riitä ihmistä lihottamaan, sillä keho ei pysty varastoimaan sitä, ainoastaan polttamaan energiaksi.
http://users.wfu.edu/gregvs3/Nutrition/A3.htm
Lainaa:
The ADH pathway is the primary method of metabolizing alcohol, and can only be used by stomach and liver cells. The other two pathways do not begin to function unless the ADH pathway is overloaded, and can function throughout the body. In all of the pathways, alcohol ends up being converted to Acetyl-CoA, which then enters into the citric acid cycle. Usually alcohol is metabolized first (since it cannot be used in gluconeogenesis or fat synthesis), so any other energy sources the body has will be temporarily be stored as fat, which accounts for "beer bellies". On the other hand, those that drink heavily do not make as efficient use of the energy in alcohol, since they are largely relying on the MEOS system. As a result, these individuals are typically skinnier then would be expected from their level of drinking. Also, the fact that ADH is require to metabolize Acetaldehyde into Acetyl-CoA explains why excessive intake of alcohol increases blood Acetaldehyde levels, as the ADH hormone is already overloaded.
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