Nicotine itself could clear from your body in a few hours, but its byproduct can linger for days or weeks. Most nicotine tests detect cotinine, which can show up in urine, saliva, blood, hair, and ...

Nicotine can be present in breast milk for a few hours after smoking or vaping. There are steps you can take to reduce your baby’s exposure to nicotine in breast milk. Nursing can provide many ...

A new study that found high levels of heavy metals in popular nicotine vapes adds to concerns about the products. By Dani Blum When vapes started to become popular in the mid-2010s, the tiny ...