In 2018, 0.6% of adults in the United States reported using e-cigarettes to quit smoking but were not sure if they had quit smoking completely
Research published in the Journal of Power Sources (2019) found that batteries cycled between 20% and 80% charge retained measurably higher capacity over time compared to those repeatedly drained to 0%

Resources Clearing the Smoke on Cannabis: Highlights Clearing the Smoke on Cannabis: Respiratory and Cardiovascular Effects of Cannabis Smoking [report] Clearing the Smoke on Cannabis: Medical Use of Cannabis and Cannabinoids An Update Clearing the Smoke on Cannabis: Regular Use and Cognitive Functioning Clearing the Smoke on Cannabis: Regular Use and Mental Health Clearing the Smoke on Cannabis: Edible Cannabis Products, Cannabis Extracts and Cannabis Topicals Clearing the Smoke on Cannabis: Cannabis Use and Driving An Update Clearing the Smoke on Cannabis: Cannabis Use During Pregnancy and Breastfeeding The Effects of Cannabis Smoking: What You Need to Know [report in short] How Smoking Cannabis Affects Your Health [poster] Edible Cannabis Products, Cannabis Extracts and Cannabis Topicals: What You Need to Know Each of these types of cannabis product has its own attributes and uses
A federal ban on most flavors went into effect in 2020, however, menthol remains on the market
1 Tobacco manufacturers have effectively used cigarette pack design, colors, and descriptive terms to communicate the impression of lower-tar or milder smoke while preserving taste satisfaction