How long weed stays in your system depends on the type of drug test being used and how frequently you use cannabis.

How long nicotine stays in your system depends on factors like smoking frequency. Antioxidants from food like garlic can ...

Nearly half of all drivers killed in crashes had high levels of THC in their blood. Despite legalization, the risk hasn’t dropped, and experts say public warnings haven’t kept up.

As more people explore marijuana for medical use, Stanford Medicine scientists warn that older adults should be particularly ...

U.S. cannabis sales hit record levels over the Thanksgiving weekend, prompting industry predictions the combination of COVID-19 anxiety and a trend towards legalisation has triggered a permanent ...