You've probably heard I didn't know I was pregnant stories that went something like this: A woman claims she took an at-home pregnancy test that came back negative, but, lo and behold, she really was pregnant -- and the pregnancy progressed without her knowledge.
Carbonation in anything you drink allows it to enter the bloodstream faster. There is no difference with an alcoholic beverage. If you drink alcohol that is either carbonated or mixed with a carbonated beverage, then it will absorb into the bloodstream faster than drinks that are not carbonated. Examples are cocktails such as Jack and Coke, which is whiskey mixed with Coca-Cola.
All beer leaves the brewer carbonated. This is accomplished in one of two ways - natural and forced carbonation. In both cases, beer and carbon dioxide are sealed in a container under pressure. The beer absorbs the CO2 giving the beer its fizz. Natural carbonation results from the fermentation process. Fermentation produces alcohol and carbon dioxide as yeast digests the sugar in the wort. Although most of the carbon dioxide is allowed to escape during fermentation the brewer will seal the beer in a container when it is almost complete. This is how natural carbonation is used to carbonate beer in holding vessels at the brewery and in casks. Anther way to use natural carbonation is in the bottle.