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2. Nicotine - Wikipedia

   en.wikipedia.org/wiki/Nicotine

   Nicotine has a half-life of 1–2 hours. Cotinine is an active metabolite of nicotine that remains in the blood with a half-life of 18–20 hours, making it easier to analyze. [151] Nicotine is metabolized in the liver by cytochrome P450 enzymes (mostly CYP2A6, and also by CYP2B6) and FMO3, which selectively metabolizes (S)-nicotine.

3. Nicotine poisoning - Wikipedia

   en.wikipedia.org/wiki/Nicotine_poisoning

   At least at "normal" levels, as nicotine in the human body is broken down, it has an approximate biological half-life of 1–2 hours. Cotinine is an active metabolite of nicotine that remains in the blood for 18–20 hours, making it easier to analyze due to its longer half-life. [33]

4. Half-life - Wikipedia

   en.wikipedia.org/wiki/Half-life

   For example, the medical sciences refer to the biological half-life of drugs and other chemicals in the human body. The converse of half-life (in exponential growth) is doubling time. The original term, half-life period, dating to Ernest Rutherford's discovery of the principle in 1907, was shortened to half-life in the early 1950s. [1]

5. Cotinine - Wikipedia

   en.wikipedia.org/wiki/Cotinine

   Cotinine has an in vivo half-life of approximately 20 hours, and is typically detectable for several days (up to one week) after the use of tobacco. The level of cotinine in the blood, saliva, and urine is proportionate to the amount of exposure to tobacco smoke, so it is a valuable indicator of tobacco smoke exposure, including secondary (passive) smoke. [14]

6. 8 Lowest Tar and Nicotine Cigarette Brands in 2019 - AOL

   www.aol.com/news/8-lowest-tar-nicotine-cigarette...

   For those looking for a milder taste and lighter effect of a cigarette, we prepared a list of lowest tar and nicotine cigarette brands in 2019. Let’s start off with some crude facts. A cigarette ...

7. Tobacco and life insurance: Here’s what you should know - AOL

   www.aol.com/finance/tobacco-life-insurance-know...

   Products that help you quit smoking, like nicotine gum and nicotine patches, still leave traces of cotinine in your body. So, if you use these products, you’ll still probably be classified as a ...

8. Biological half-life - Wikipedia

   en.wikipedia.org/wiki/Biological_half-life

   Polonium in the body has a biological half-life of about 30 to 50 days. Caesium in the body has a biological half-life of about one to four months. Mercury (as methylmercury) in the body has a half-life of about 65 days. Lead in the blood has a half life of 28–36 days. [29] [30] Lead in bone has a biological half-life of about ten years.

9. Insomnia: What Exactly Is It & How Do I Treat It? - AOL

   www.aol.com/insomnia-exactly-treat-125700471.html

   A traumatic event or major life changes. Frequent exposure to excessive light or noise when trying to sleep. An uncomfortable sleeping environment. Using caffeine, alcohol, nicotine, or ...