Doctor insights on:
How Long Does Alchohol Stay In System
It depends: it depends on how fast your body metabolizes it and how much you have ingested. usually men metabolize it faster than woman. It usually takes 1-2 hours for each drink to get metabolized. ...Read more
Alcohol in body: It depends on genetic predisposition. Some people has enormous amount of enzymes to digest alcohol rapidly and not get drunk with +++ beers while other cannot tolerate more than 2b due to lack of that enzyme, leading to very slow elimination of alcohol from the body. Women have half of men's enzyme to digest alcohol. ...Read more
2-3 days: For most smokers. After a single exposure to tobacco smoke, cotinine can be detected in blood or urine for less than 24 hours, but in an individual smoking 1/2 pack or more per day, 2-3 days is common. It is rarely positive after 5 days. Hair testing can detect cotinine (main metabolite) for months, depending on length of hair. Nicotine is very short-acting and is only present for hours. ...Read more
Marijuana in Body: The active ingredient in marijuana is THC. The half-life (meaning how long it takes for 1/2 of it to "disappear") is about 20 hours. It can settle in fat cells and take time to get out of the body. Generally after 2-weeks it is all gone, although there have been reports of up to 30-days. ...Read more
Variable: In general, it is short-acting, with a half-life of about 3 hours, but there may be genetic differences as well as drug/drug and drug/food interactions. Some people are very sensitive to some effects of caffeine, and consuming some in the morning may even interfere with sleep. Drugs like caffeine alter the receptor/neurotransmitter environment, and those effects may last longer than the drug. ...Read more
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