e-cigs are a gateway to cannabis too: evidence from Germany

In addition to the sizable literature showing that e-cigarettes are attracting many kids at low risk of initiating nicotine use with cigarettes to nicotine, many of whom go on to smoke cigarettes, there is strong consistent evidence that e-cigarettes are a gateway to the cannabis use in the USA. Now Ann-Kathrin Seidel and her colleaguesContinue reading “e-cigs are a gateway to cannabis too: evidence from Germany”

Calif legislature advancing two bills to further weaken public health marijuana protections

Last week i blogged about the new evidence from California about the success in almost eliminating youth cigarette smoking and keeping vaping at less than half the national average. Unfortunately, the same Statewide California Student Tobacco Survey showed that youth marijuana use was substantially higher than tobacco use.  Specifically, almost one third (31.2%) of highContinue reading “Calif legislature advancing two bills to further weaken public health marijuana protections”

New studies for UK, Netherlands and Flanders and US confirm gateway effects of e-cigs to combusted tobacco products

Three new studies add to the already overwhelming case that e-cigarettes are a gateway to combusted product use; two of these studies also show that combusted tobacco use predicts later e-cigarette use among youth. These studies are benefit from the fact that the data were collected relatively recently, which is important because e-cigarette technology isContinue reading “New studies for UK, Netherlands and Flanders and US confirm gateway effects of e-cigs to combusted tobacco products”

Onsite cannabis consumption laws rarely ensure clean indoor air

As more and more states legalize adult-use cannabis, the issue of marijuana lounges and other forms of onsite consumption have come to the fore. Like with tobacco smoke, the levels of indoor air pollution when people are smoking (or vaping) marijuana are substantial. The American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), whichContinue reading “Onsite cannabis consumption laws rarely ensure clean indoor air”

Unhealthy air pollution in cannabis dispensary that allows on-site consumption

States are moving quickly to legalize adult use of cannabis and many permit on-site consumption of cannabis products in retail outlets or marijuana lounges. All the inhaled forms of cannabis (smoking, vaping, dabbing) generate an aerosol of ultrafine particles that carries the THC (the psychoactive agent in cannabis) deep into the lungs where it isContinue reading “Unhealthy air pollution in cannabis dispensary that allows on-site consumption”

Marijuana joints produce 3.5 times as much secondhand smoke as a Marlboro

Tobacco cigarettes are such strong sources of indoor air pollution that the only way to get acceptable indoor air quality is to make spaces smokefree. Now, Wayne Ott and colleagues have done a real-world study of the levels of pollution caused by smoking a joint (or a bong or vaping cannabis) and found that marijuanaContinue reading “Marijuana joints produce 3.5 times as much secondhand smoke as a Marlboro”

Good news: Youth e-cig use dropped in 2020

The CDC recently reported big drops in e-cigarette use between 2019 and 2020 (high school dropped from 27.5% to 19.6% and middle school dropped from 10.5% to 4.7%). As the figure above (courtesy of CDC.) shows, however, e-cig use is still very high, way above where cigarette smoking and e-cigarette use were nine years earlierContinue reading “Good news: Youth e-cig use dropped in 2020”

Register for UCSF “It’s about a Billion Lives” symposium on Jan 29, 2021

Registration is now open for UCSF’s annual “It’s About a Billion Lives” Symposium will be held Friday January 29, 2021 from 8:00am–12:30pm Pacific Time by Zoom webinar.  In addition to the oral presentations, there will be posters from other UCSF research. KEYNOTE: “Half a century later it is still about social acceptability,” Stanton A. Glantz,Continue reading “Register for UCSF “It’s about a Billion Lives” symposium on Jan 29, 2021″

SF Board of Supervisors passes tobacco smokefree multiunit housing bill but exempts marijuana

Tonight the San Francisco Board of Supervisors voted 10-1 to make multiunit housing tobacco smokefree but turned a blind eye to the evidence on the similar harms of secondhand marijuana smoke. The Board will have to vote a second time next week to send the ordinance to the mayor for signature. Marijuana advocates successfully arguedContinue reading “SF Board of Supervisors passes tobacco smokefree multiunit housing bill but exempts marijuana”