Smokeless tobacco products, supply chain and retailers' practices in England: a multimethods study to inform policy

Tobacco company agreements with tobacco retailers for price discounts and prime placement of products and advertising: a scoping review

OBJECTIVE

The objectives of this scoping review are to examine existing research on the often-secretive contracts between tobacco manufacturers and retailers, to identify contract requirements and incentives, and to assess the impact of contracts on the sales and marketing of tobacco products in the retail setting.

DATA SOURCES

The systematic search was conducted in PubMed/MEDLINE, Web of Science, Scopus, ProQuest Political Science Database, Business Source Premier, ProQuest Agricultural & Environmental Science Collection, and Global Health through December 2020.

STUDY SELECTION

We included studies that collected and analysed empirical data related to tobacco contracts, tobacco manufacturers, and tobacco retailers. Two reviewers independently screened all 2786 studies, excluding 2694 titles and abstracts and 65 full texts resulting in 27 (0.97%) included studies.

DATA EXTRACTION

Study characteristics, contract prevalence, contract requirements and incentives, and the influence of contracts on the retail environment were extracted from each study.

DATA SYNTHESIS

We created an evidence table and conducted a narrative review of included studies.

CONCLUSIONS

Contracts are prevalent around the world and handsomely incentivise tobacco retailers in exchange for substantial manufacturer control of tobacco product availability, placement, pricing and promotion in the retail setting. Contracts allow tobacco companies to promote their products and undermine tobacco control efforts in the retail setting through discounted prices, promotions and highly visible placement of marketing materials and products. Policy recommendations include banning tobacco manufacturer contracts and retailer incentives along with more transparent reporting of contract incentives given to retailers.

Alteration of oral bacteriome of smokeless tobacco users and their association with oral cancer

Smokeless tobacco (SLT) is certainly one of the major risk factors associated with oral cancer. Disruption of oral microbiota-host homeostasis contributes to the progression of oral cancer. Here, we profiled SLT users' oral bacterial composition and inferred their functions by sequencing 16S rDNA V₃-V₄ region and PICRUSt2, respectively. Oral bacteriome of SLT users (with or without oral premalignant lesions), SLT with alcohol co-users, and non-SLT consumers were compared. Oral bacteriome is shaped primarily by SLT use and the incidence of oral premalignant lesions (OPL). A significantly increased bacterial α-diversity was monitored in SLT users with OPL compared to in SLT users without OPL and non-users, whereas β-diversity was significantly explained by OPL status. Overrepresented genera were Prevotella, Fusobacterium, Veillonella, Haemophilus, Capnocytophaga, and Leptotrichia in SLT users having OPL. LEfSe analysis identified 16 genera as a biomarker that were differentially abundant in SLT users having OPL. The functional prediction of genes significantly increased for several metabolic pathways, more importantly, were nitrogen metabolism, nucleotide metabolism, energy metabolism, and biosynthesis/biodegradation of secondary metabolites in SLT users having OPL. Furthermore, HPV-16 and EBV, but not HPV-18, were considerably connected with the SLT users having OPL. Overall, this study provides evidence that SLT utilization and OPL development are associated with oral bacteriome dysbiosis indicating the enrichment of bacterial species known for their contribution to oral carcinogenesis. Therefore, delineating the cancer-inducing bacterial population in SLT users will facilitate the future development of microbiome-targeted therapies. KEY POINTS: • SLT consumption significantly elevates oral bacterial diversity. • Prevalent significant genera are Prevotella, Veillonella, and Haemophilus in SLT users with OPL. • SLT promotes the occurrence of the cancer-inducing bacterial population.

Common assumptions in tobacco control that may not hold true for South-East Asia

Tobacco is a threat to public health in South-East Asia and its control should be a priority. However, many common assumptions about tobacco control may not hold true for the region and can misdirect policy. The substantial health risks associated with smokeless tobacco have been largely misunderstood and neglected. The syndemic association between tuberculosis and tobacco has also been overlooked. Similarly, less attention has been paid to address second-hand smoke exposure of pregnant women to indoor smoking (caused predominantly by men). On the other hand, our poor understanding of the diverse tobacco supply chain has been blocking progress in tobacco control. Finally, the rising popularity of electronic cigarettes has thrown new challenges; many governments, concerned for its youth, have banned such products. We argue for a nuanced approach to tobacco control in South-East Asia. We also encourage a wider debate in public health, where other established assumptions may be hampering progress.