Self-reported Cannabidiol (CBD) Use for Conditions With Proven Therapies.

Importance: Use of cannabidiol (CBD) has markedly increased in the past 5 years, concurrent with marketing claims that over-the-counter CBD can be used to treat almost any health condition. However, the reasons why individuals use CBD remain unclear.

Objective: To assess whether individuals are using CBD for diagnosable conditions that have evidence-based therapies.

Trends in Lung Cancer and Cigarette Smoking: California Compared to the Rest of the United States.

Three cigarette smoking behaviors influence lung cancer rates: how many people start, the amount they smoke, and the age they quit. California has reduced smoking faster than the rest of the United States and trends in these three smoking behaviors should inform lung cancer trends. We examined trends in smoking behavior (initiation, intensity, and quitting) in California and the rest of United States by regression models using the 1974-2014 National Health Interview Surveys ( = 962,174).

Tobacco control in California compared with the rest of the USA: trends in adult per capita cigarette consumption.

Background: In the 1990s, California led the USA in state-level tobacco control strategies. However, after 2000, California lost ground on cigarette taxes, although it maintained higher levels of smoke-free homes among smokers.

Methods: Trends in per capita cigarette consumption were assessed through taxed sales data and from self-report in repeated national cross-sectional surveys.