Nicotine can pass from a person’s lungs into breast milk. Nicotine levels in breast milk are highest during and immediately after smoking and tend to drop by about half in around 95 minutes. Avoiding ...

Nicotine quickly enters your bloodstream. Your liver then breaks down nicotine into several byproducts, primarily cotinine. Depending on what you're testing, such as a blood, urine, saliva, or hair ...

People who ingest nicotine may take around 5–25 minutes longer than nonsmokers to fall asleep. People who smoke cigarettes also generally sleep for a shorter time than those who do not smoke. They ...

Whether you're smoking cigarettes or vaping e-cigarettes, you're ingesting nicotine. Either way, the addictive substance is linked to a host of health issues, and experts say they still don't have a ...

The Centers for Disease Control and Prevention says two-thirds of adults in 2018 drank alcohol. How much obviously varies, but no one wants to end the day with a DUI because they mistakenly believed ...

How long alcohol stays in your system depends on factors such as age, weight and medications. Breath tests detect alcohol within 24 hours and urine tests measure within at least 12 to 24 hours. The ...