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      COVID-19 as an opportunity for smokeless tobacco control and prohibiting spitting in public places

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          Abstract

          Introduction Smokeless tobacco (SLT), a highly addictive and ubiquitous form of tobacco is used across 140 countries with 356 million consumers, wherein nearly 82% reside in the South-East Asia Region (SEAR). 1 Moreover, out of the 180 parties to the WHO Framework Convention on Tobacco Control (FCTC), 29 countries account for 10% or more prevalence of SLT use among men, women, or both, which presents a humongous threat to global public health. 1 Since the outbreak of the novel Corona Virus (COVID-19) pandemic, the clinical outcomes of tobacco users such as their susceptibility to infection and prognosis have been examined. 2 However, despite the pervasive use of SLT products and the probable risks of SLT use in the context of COVID-19, much of the research has been centered on tobacco smoking. 2 , 3 In the SEAR, a few nations have attempted to utilize the pandemic as an opportunity to curb tobacco use. For instance, India prohibited public spitting and made mass appeals to discontinue use of SLT products. 4 These bans laid the foundation for increased tobacco control in the nation and enabled various states and districts to issue bans on the sale and manufacturing of gutkha and paan masala. These efforts have also been strengthened by national appeals and broadcast by the Prime Minister of India wherein public spitting has been linked to be detrimental to COVID-19 control as well as sanitation programmes like Swachh Bharat Mission. This ban has been promulgated as an imperative instrument in enabling legal and disciplinary action against violators across several states and Union Territories (UTs) such as Delhi, 5 Kerala 6 as well as Gujarat. 7 However, the compliance to this ban has not been adequately evaluated. Similar appeals have been made in Indonesia 8 and Sri Lanka 9 by civil society organizations. However, nations such as Bangladesh 10 and Bhutan 11 have forgone this opportunity for the financial contribution of tobacco industry to the economy and to prevent cross-country import to prevent risk of infection. In the SEAR, limited efforts to control SLT use and the accompanying public spitting have been undertaken. To control the COVID-19 pandemic and reduce the arising death toll, it is imperative to develop a united front against SLT use. Smokeless tobacco use, spitting and Covid-19 Global tobacco control efforts are fixated on the prevention and cessation of tobacco use in order to curb non-communicable diseases such as cancers, cardiovascular and metabolic disorders. However, while SLT use yields a high risk of non-infective diseases, the rampant use of SLT poses a grim reality for exposure to infectious diseases such as COVID-19. Since the traditional practices of consumption of SLT requires mashing the products in the palms and using fingers to place the product in the oral cavity, often shared among peers, this increases the possibility of transmission from hand to mouth. Further, chewing tobacco or areca nut induces salivation and instigates spitting out the tobacco juice with saliva. 3 Consequently, post consumption “spitting” is a common sight in public places, which is a neglected yet daunting threat to public health as it makes the entire community susceptible to infectious diseases. 12 Further, nicotine, which is a major constituent of tobacco products acts as a immunosuppressant. 13 Thus, SLT and Areca Nut users are more at risk of severe COVID-19 infection due to weakened immunity and accompanying morbidities. 3 Tobacco control in the midst of Covid-19 pandemic Despite the threat to public health, the piece-meal approaches of the countries in the SEAR to curb SLT consumption and public spitting are unfortunate. The COVID-19 pandemic presents a window of opportunity to strengthen tobacco control policies, as public awareness on reducing tobacco use to improve health and well-being is at an unprecedented scale. These approaches can be reinforced through stringent and sustainable tobacco control policies, especially in the nine member states that are parties to the WHO Framework Convention on Tobacco Control (WHO FCTC). Since SLT and areca nut use is primarily endemic to the SEAR, tobacco control policies must be tailored to these regions as fragmented health systems are unable to cope with the demands of cessation support. As temporarily instated by India, a complete ban on the consumption of SLT and areca nut products and public spitting must be mandated across all nations. Further, attempts must be made to understand the linkages of COVID-19 and other infectious disorders with SLT and areca nut use. There is a pressing need to strictly enforce local laws and policies to completely ban manufacture and sale of tobacco products in a phased manner. This will not only limit the easy accessibility to SLT products, but also reduce the vulnerability to several non-communicable and communicable diseases. Further, provided there is an increased consciousness among the general public due to the ongoing pandemic, this can be utilized to create awareness on the risks of SLT and areca nut use. Adequate cessation support must be provided at the community level which can be further strengthened through the channels of digital health and online support. Multi-sectoral cooperation and political resolve are essential instruments in this battle against the tobacco epidemic which would not only enable alleviation of current tobacco use but also lead to tobacco-free generations. Funding None. Declaration of competing interest None.

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          Harmful effects of nicotine

          With the advent of nicotine replacement therapy, the consumption of the nicotine is on the rise. Nicotine is considered to be a safer alternative of tobacco. The IARC monograph has not included nicotine as a carcinogen. However there are various studies which show otherwise. We undertook this review to specifically evaluate the effects of nicotine on the various organ systems. A computer aided search of the Medline and PubMed database was done using a combination of the keywords. All the animal and human studies investigating only the role of nicotine were included. Nicotine poses several health hazards. There is an increased risk of cardiovascular, respiratory, gastrointestinal disorders. There is decreased immune response and it also poses ill impacts on the reproductive health. It affects the cell proliferation, oxidative stress, apoptosis, DNA mutation by various mechanisms which leads to cancer. It also affects the tumor proliferation and metastasis and causes resistance to chemo and radio therapeutic agents. The use of nicotine needs regulation. The sale of nicotine should be under supervision of trained medical personnel.
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            Tobacco smoking and COVID-19 infection

            Taxes on the sale of tobacco products provide enormous revenue for governments and the tobacco industry provides millions of jobs globally; but tobacco also causes death in 50% of consumers and places a heavy, preventable toll on health-care systems. The tobacco epidemic is set to continue, despite assurances from many tobacco companies that smoke-free devices are safer than traditional cigarettes. During the coronavirus disease (COVID-19) pandemic, the issue of tobacco smoking and risk for acute respiratory infection is again topical. Much of the global focus on tobacco prevention and cessation focuses around non-infective respiratory, cardiovascular, and cancer related deaths, and much of the e-cigarette promotional rhetoric revolves around potentially saving billions of lives that might otherwise be lost due to these non-infective outcomes. The risk of infectious complications is, however, the predominant focus and concern in low-income and middle-income countries, particularly during pandemics. Some countries, for example South Africa and India, have banned the sale of tobacco products during lockdown periods. Whether this ban is justified and supported by evidence of harm from the combined effect of tobacco use and COVID-19 is uncertain, as is whether current smokers can be expected to simply stop during a pandemic. Robust evidence suggests that several mechanisms might increase the risk of respiratory tract infections in smokers. Smoking impairs the immune system and almost doubles the risk of tuberculosis infection (latent and active) due to impairment of immune function; specifically, smoking affects the macrophage and cytokine response and hence the ability to contain infection. Similarly the risk for pneumococcal, legionella, and mycoplasma pneumonia infection is about 3–5-times higher in smokers. Users of tobacco and e-cigarettes have increased adherence of pneumococci and colonisation, as a result of the upregulation of the pneumococcal receptor molecule (platelet activating receptor factor); smokers are also 5-times more likely to contract influenza than non-smokers. Data from the previous Middle Eastern respiratory syndrome coronavirus (MERS) and severe respiratory syndrome coronavirus (SARS) is scarce. A single study from Korea reported a 2·55 (95% CI 1·1–5·9) increased risk of mortality in smokers with MERS, but this study included only eight smokers. For COVID-19, data are also scarce; one review did not report on smoking as a risk factor for infection, but did report an increased risk of severe disease (relative risk [RR] 1·4 [95% CI 0·98–2·00]) and need for mechanical ventilation or death (RR 2·4 [1·43–4·04]) for current smokers. Another meta-analysis did not find an association between current smoking and disease severity. The largest study to date (pre-print), from the UK, reports an increased risk for death in current smokers compared with never-smokers of 1·25 (95% CI 1·12–1·40) when adjusted for age and sex, which decreased to 0·88 (0·79–0·99) when fully adjusted. Mechanistic studies postulate that the increased susceptibility to infection might be due to upregulation of the angiotensin converting enzyme 2 (ACE2) receptor, the main receptor used by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to gain entry to host mucosa and cause active infection—an apparently unique mechanism to this virus. Current smokers have increased gene expression of ACE2, than previous smokers and non-smokers. In addition, there is an association between FEV1 and ACE2 gene expression. Despite this association, it is unclear whether modification of ACE2 receptor frequency or availability has an effect on mortality. Certainly, patients on ACE inhibitors (ACEIs) and angiotensin 2 receptor blockers (ARBs) do not appear to be at increased risk of infection or death. Non-peer-reviewed data released from France suggests that smoking might have a potential protective effect against SARS-CoV-2 infection, via interaction with the acetylcholine receptor, but these data have not been confirmed and should not in any way be an indicator to start or continue smoking. The challenge for studies of COVID-19 is to have large enough sample sizes to allow correction for confounders, such as hypertension, diabetes, obesity, race, sex, and chronic obstructive pulmonary disease (COPD), all of which might be associated with tobacco smoking and poor outcomes. Currently, no evidence suggests that e-cigarette use increases the risk of being infected by SARS-CoV-2. It is possible that the period of self-isolation and lockdown restrictions during this pandemic could be used by some as an opportunity to quit smoking, but realistically only a minority of people will achieve cessation. For the majority, the increased stress of a potentially fatal disease, possibility of loss of employment, feelings of insecurity, confinement, and boredom, could increase the desire to smoke. During the financial collapse of 2008, tobacco shares were one of the only shares to increase. Here, we suggest a few steps to help reduce tobacco use during this pandemic and hopefully long after. First, every smoker should be encouraged to stop, be provided with advice, support, and pharmacotherapy, if available; times of crisis can often provide the impetus to stop smoking. Banning tobacco sales might not be wholly effective if people are still able to access cigarettes and so other measures need to be implemented to discourage tobacco use. In South Africa, before the pandemic, the illegal cigarette trade was thriving and according to news reports, virtually all smokers have ready access to cigarettes, provided they can afford the inflated prices. Second, we need more data; many of the H1N1 influenza cohorts did not report on smoking status, which is also the case for many other infectious diseases. To determine the effect smoking might have on infection, it is essential that every person tested for COVID-19, and for other respiratory infectious diseases, should be asked about their smoking history. All outcomes related to screening, testing, admission, ventilation, recovery, and death need to be evaluated relative to smoking status and adjusted for comorbid conditions, such as ischaemic heart disease and COPD. Finally, the world should aim to be tobacco free, but given the intricate web of finance, taxes, jobs, lobbying, and payments made to officials, this is unlikely to happen in the near future. However, the battle against tobacco use should continue, by assisting smokers to successfully and permanently quit. Avoiding COVID-19 now, but having lung cancer or COPD later on, is not a desired outcome; therefore, any short-term interventions need to have long-term sustainability. © 2020 Science Photo Library 2020 Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
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              Smokeless tobacco control in 180 countries across the globe: call to action for full implementation of WHO FCTC measures

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                Author and article information

                Journal
                Clin Epidemiol Glob Health
                Clin Epidemiol Glob Health
                Clinical Epidemiology and Global Health
                The Author(s). Published by Elsevier B.V. on behalf of INDIACLEN.
                2452-0918
                2213-3984
                8 June 2021
                July-September 2021
                8 June 2021
                : 11
                : 100794
                Affiliations
                [a ]WHO FCTC Global Knowledge Hub on Smokeless Tobacco, ICMR- National Institute of Cancer Prevention and Research, Indian Council of Medical Research (ICMR), Noida, 201301, Uttar Pradesh, India
                [b ]Division of Preventive Oncology & Population Health, ICMR- National Institute of Cancer Prevention and Research, Indian Council of Medical Research (ICMR), Noida, 201301, Uttar Pradesh, India
                [c ]ICMR - National Institute of Cancer Prevention and Research, Indian Council of Medical Research (ICMR), Noida, 201301, India
                Author notes
                []Corresponding author. WHO-FCTC Global Knowledge Hub on Smokeless Tobacco, ICMR- National Institute of Cancer Prevention and Research, Indian Council of Medical Research (ICMR), Noida, 201301, Uttar Pradesh, India.
                Article
                S2213-3984(21)00102-0 100794
                10.1016/j.cegh.2021.100794
                9393231
                24a6d985-8dd6-4c1a-8cb6-a2aae1eafcb6
                © 2021 The Author(s)

                Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

                History
                : 11 March 2021
                : 29 April 2021
                : 19 May 2021
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