Pregnant people who live in cities with sugary beverage taxes—like SF, Berkeley and Oakland—are less likely to develop #gestationaldiabetes and unhealthy weight, which UCSF’s @justinswhite says is important for the parent and baby’s health later in life.

I'm also grateful to @Cat_Ho @sfchronicle for covering this study. https://t.co/jL24UCutbE

Thank you @NIDDKgov and @CalEndow for funding this study (PI: @drdeancommxn). Thanks also to an army of undergrads @UCBerkeley for hand-coding nutrition facts for 1000s of beverage products and to co-senior author #SofiaVillasBoas for supervising that work!

After Oakland's tax, California passed a state law that prohibits local jurisdictions from passing any new taxes on sugary drinks until 2030. Our study suggests that this state preemption of local experimentation may have health consequences.

We then input our estimated ↓ in sugary beverage sales into a model of 6 diet-related diseases, applied to a simulated Oakland population. Oakland's tax is projected to improve health (94 QALYs per 10K) and save $100K per 10K in ↓ medical costs over a 10-year period.

We don't find that the tax caused consumers to shop for sugary drinks in nearby areas (based on diff-in-diff and synthetic control), nor that they switched to sweet snacks. Past studies of Oakland's tax by #LisaPowell and @cawley_john have found some cross-border shopping.

The estimated ↓ in sales of sugary beverages was similar (-22%) when we compared Oakland to a matched set of Los Angeles stores using a synthetic control analysis.

Using retail sales data, we find Oakland's tax decreased purchases of taxed beverages by 27% over the 30 months after implementation, comparing Oakland to nearby Richmond, CA. This is in line with past estimates.

Our team's latest in @PLOSMedicine: An evaluation and cost-effectiveness analysis of Oakland's sugary beverage tax on beverage purchases. URL: https://t.co/I9cAmBuYwc With #SanjayBasu @skaplan92 @kmadsenCAL #SofiaVillasBoas @drdeancommxn

🚨THIS FRIDAY🚨 12pm ET: ☀️@HojinPark6☀️ from @OSUWexMed will present: "The Effect of Smokeless Tobacco Excise taxes on Use among US Youth." Register 👉 https://t.co/pTv57MLaa1 @JCMecon @justinswhite @Ce_Shang_HE @mikepesko

However, the quality of evidence from peer-support studies is quite poor. The literature would benefit from additional, well-powered studies.

We find evidence that peer support enhances cessation, with variation by whether the peer smoked.

Our new meta-analysis revisits the effects of peer-support interventions on #smoking #cessation. https://t.co/QbeDenWkVt Led by #PatrickYuan, with @LeeWestmaas, @drjthrul, & others.

Thanks to @NICHD_NIH and @NIDDKgov for their support. cc @UCSF_IHPS @UCSF_Epibiostat @UCSFFamilyMed @UCSF_ObGynRS @ucsfcvp @ChangeLabWorks @HealthyFA @NOPRENnetwork @drdeancommxn @RobertLustigMD @HilarySeligman @skaplan92 @knoxmecon @JenFalbe @AnnaGrummon @marionnestle @ShuWenNg

This is the first study I know of focused on the perinatal effects of SSB taxes, and it makes the case that SSB taxes can provide important health benefits to women and children.

We also found interesting differences in the impacts of SSB taxes across subgroups, although we didn't come away with clear conclusions about whether the taxes reduced the stark disparities that exist in perinatal health. Much more work is needed.

Some of the largest perinatal benefits of SSB taxes occurred in Philly, consistent with evidence (from @cawley_john @RobertoCA @DrBleich and others) that Philly's SSB tax led to a particularly large decline in SSB sales and consumption.

We find that the SSB taxes led to: 1) ↓ risk of GDM by 41% (-2.2 percentage points) 2) ↓ gestational weight gain by 7.9% (-0.2 std. dev) 3) ↓ risk of small-for-gestational-age babies by 39.1% (-4.3 percentage points)

We compare changes in outcomes for pregnant women in 5 US cities with SSB taxes (Berkeley, Philly, Oakland, San Fran, Seattle) vs. pregnant women in other large, urban US cities, using a Callaway-Sant'Anna difference-in-differences approach.

Using data from 5+ million US births from 2013-19, we study changes in risk of gestational diabetes and gestational weight gain following SSB taxes as well as several secondary outcomes for mothers and infants.