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INTRODUCTION: Tanning bed use has been directly correlated with increased risk of melanoma and non-melanoma skin cancers with greater duration and frequency of use. Despite this, complete bans for minors accessing indoor tanning devices are active in less than half of the states in the United States. CASE PRESENTATION: A 65-year-old female presented to our Mohs surgery clinic with a history of left temporal T2a melanoma, multiple untreated advanced keratinocyte carcinomas, and innumerable smaller untreated keratinocyte carcinomas on her legs, arms, and back after more than 40 years of weekly tanning bed use. DISCUSSION: Reports from the literature indicate that first exposure under age 35 to tanning devices increases the risk for melanoma and non-melanoma skin cancers. Several programs currently focus on prevention, education, and legislative change surrounding this topic. CONCLUSIONS: Highlighting such severe cases may provide an effective form of education for the public regarding the potential disease burden that results from indoor tanning.
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Melanoma , Neoplasias Cutáneas , Baño de Sol , Humanos , Femenino , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/prevención & control , Anciano , Melanoma/etiología , Melanoma/prevención & control , Baño de Sol/legislación & jurisprudencia , Factores de RiesgoRESUMEN
BACKGROUND: Skin cancer comprises half of all cancers in England and Wales. Most skin cancers can be prevented with safer sun exposure. As over exposure as a child can greatly increase future skin cancer risk, early and accessible sun safety education and promotion of sun safe behaviours is critical. Scientists agree there is no such thing as a 'safe tan', yet the public, including children, often have positive perceptions of tanned skin. To protect against future skin cancer, it is important to understand and address these misconceptions. The Curriculum for Wales with its area for Health and Well-being, and autonomy for schools in designing curriculum content, presents an ideal way to facilitate this exploration. AIMS: Gather data regarding perceptions towards tanning to explore the perceived effects of a tan on health.Inform the development and testing of an educational toolkit for integration within the Curriculum for Wales to encourage positive health behaviours and attitudes of school children towards tanning and sun exposure. METHODS: SunChat is a mixed methods exploratory study comprising three work streams: Workshops with school children to understand their perceptions on tanning.An online multiple-choice survey with parents/carers to understand perceptions, attitudes and behaviours towards tanning both for themselves and their children.An informal focus group with primary school educators to explore challenges in engaging with the school community around the Health and Well-being Area in the Curriculum for Wales. DISCUSSION: To date, there has been no work in Wales exploring children's, parents/carers', and educators' perceptions of tanning and how healthier attitudes can be encouraged. This study will engage with participants to scope current perceptions on tanning and the perceived effects tanning has on health. Findings will feed into future toolkit and curriculum development for health in schools in Wales and beyond.
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Padres , Neoplasias Cutáneas , Baño de Sol , Humanos , Gales , Niño , Neoplasias Cutáneas/prevención & control , Padres/psicología , Baño de Sol/psicología , Femenino , Conocimientos, Actitudes y Práctica en Salud , Masculino , Encuestas y Cuestionarios , Instituciones Académicas , Adolescente , Educación en Salud/métodos , Conductas Relacionadas con la Salud , PercepciónRESUMEN
BACKGROUND: Ultraviolet (UV)-exposure behaviors can directly impact an individual's skin cancer risk, with many habits formed during childhood and adolescence. We explored the utility of a photoaging smartphone application to motivate youth to improve sun safety practices. METHODS: Participants completed a preintervention survey to gather baseline sun safety perceptions and behaviors. Participants then used a photoaging mobile application to view the projected effects of chronic UV exposure on participants' self-face image over time, followed by a postintervention survey to assess motivation to engage in future sun safety practices. RESULTS: The study sample included 87 participants (median [interquartile (IQR)] age, 14 [11-16] years). Most participants were White (50.6%) and reported skin type that burns a little and tans easily (42.5%). Preintervention sun exposure behaviors among participants revealed that 33 (37.9%) mostly or always used sunscreen on a sunny day, 48 (55.2%) experienced at least one sunburn over the past year, 26 (30.6%) engaged in outdoor sunbathing at least once during the past year, and zero (0%) used indoor tanning beds. Non-skin of color (18 [41.9%], p = .02) and older (24 [41.4%], p = .007) participants more often agreed they felt better with a tan. Most participants agreed the intervention increased their motivation to practice sun-protective behaviors (wear sunscreen, 74 [85.1%]; wear hats, 64 [74.4%]; avoid indoor tanning, 73 [83.9%]; avoid outdoor tanning, 68 [79%]). CONCLUSION: The findings of this cross-sectional study suggest that a photoaging smartphone application may serve as a useful tool to promote sun safety behaviors from a young age.
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Conductas Relacionadas con la Salud , Aplicaciones Móviles , Teléfono Inteligente , Quemadura Solar , Humanos , Adolescente , Masculino , Femenino , Niño , Quemadura Solar/prevención & control , Protectores Solares/uso terapéutico , Neoplasias Cutáneas/prevención & control , Neoplasias Cutáneas/etiología , Baño de Sol/psicología , Promoción de la Salud/métodos , Encuestas y Cuestionarios , Luz Solar/efectos adversosRESUMEN
The objective of our study was to assess the attitudes and behaviors in Japan regarding sun exposure and compare them to those in Europe and North America. The study population was a representative sample of individuals aged >18 years from Ipsos panels in Japan (N = 1000), North America (N = 1000), and Europe (N = 6000) using the quota method. Questionnaires covered habits, practices, and perceptions regarding sun exposure. Results revealed that the majority of people (80.1%) believed that the sun gives them energy, and 61.1% considered that being tanned made them look healthier. However, there was a significant difference between men and women regarding the appeal of tanned skin, with 54.95% of men versus 34.67% (p < 0.001) of women seeing a tan as an aesthetic asset. People aged <40 years were less likely to find a tan attractive (30.3%) compared to those aged ≥40 years (48.9%) (p < 0.001). Of those questioned, 45.70% of used sunscreen with a much higher use among women (70.10%) than men (18.74%) (p < 0.001). Almost 54% of people said they stayed in the shade to protect themselves from the sun with this behavior being more prevalent among women (67.05%) and fair-skinned individuals (56.13%). Fear of the risks of sun exposure was more common among women, with 84.8% fearing premature skin aging, compared to 71.8% of men (p < 0.001). In Japan, 44.30% of those questioned said tanned skin was attractive (p < 0.001); for Europeans and North Americans the proportions were 81.1% and 77.6%, respectively. Only a quarter (25.80%) thought it essential to return from vacation with a tan. On the other hand, Europeans showed a strong recognition of the energy the sun brings (83.18%), and widely believed that tanned skin is attractive (82.32%) and healthy (73.15%). In North America, attitudes were similar to those in Europe regarding the attractiveness of tanned skin (77.65%) and the importance of returning tanned from vacation (48.15%). Compared to Europeans and North Americans, the Japanese seemed to be more cautious about sun-induced hazards and considered lighter skin to be more attractive.
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Conocimientos, Actitudes y Práctica en Salud , Luz Solar , Protectores Solares , Humanos , Femenino , Masculino , Adulto , Japón/epidemiología , Europa (Continente) , América del Norte/epidemiología , Persona de Mediana Edad , Luz Solar/efectos adversos , Protectores Solares/administración & dosificación , Encuestas y Cuestionarios , Adulto Joven , Baño de Sol/estadística & datos numéricos , Baño de Sol/psicología , Adolescente , Anciano , Factores Sexuales , Conductas Relacionadas con la SaludRESUMEN
Exposure to solar ultraviolet (UV) radiation and use of UV-emitting tanning devices are known risk factors for skin cancer. Few studies have explored the interaction between these risk factors, namely how the risk of skin cancer increases among those who both have been exposed to high levels of natural sunlight and regularly use tanning beds. Nurses' Health Study II followed 116,430 women, aged 25-42, from 1991 to 2011. Cumulative average UV exposure was based on participants' residences at follow-up periods. History of severe sunburn during ages 15-20 was used as a proxy for early-life sunlight exposure. Tanning bed use in early life data was collected. Participants reported melanoma, basal cell carcinoma (BCC), and squamous cell carcinoma (SCC) diagnoses. We built multivariable Cox regression models to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for risk of skin cancer associated with joint effects of sunlight exposure and tanning bed use. Participants with high sunlight exposure and tanning bed use during high school/college had an increased risk of BCC (HR = 1.53, 95% CI 1.37-1.71, Pinteraction=0.01; vs. low sun exposure and no tanning bed use). Participants with a history of severe sunburns and tanning bed use during high school/college were at increased risk of BCC (HR = 1.62, 95% CI 1.47-1.79, Pinteraction=0.02; vs. no sunburns and no tanning bed use). No significant interactions were found between sunlight exposure and tanning bed use on SCC and melanoma risk. We found significant interactions between sunlight exposure and tanning bed use on the risk of BCC.
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Carcinoma Basocelular , Carcinoma de Células Escamosas , Melanoma , Neoplasias Cutáneas , Baño de Sol , Luz Solar , Humanos , Femenino , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/epidemiología , Carcinoma Basocelular/epidemiología , Carcinoma Basocelular/etiología , Melanoma/etiología , Melanoma/epidemiología , Estudios Prospectivos , Carcinoma de Células Escamosas/epidemiología , Carcinoma de Células Escamosas/etiología , Adulto , Luz Solar/efectos adversos , Factores de Riesgo , Baño de Sol/estadística & datos numéricos , Quemadura Solar/epidemiología , Rayos Ultravioleta/efectos adversos , Modelos de Riesgos ProporcionalesRESUMEN
BACKGROUND AND OBJECTIVES: Due to increasing skin cancer incidence, Germany implemented a statutory nationwide routine skin cancer screening (rSCS) in 2008. The present study aims (1) to analyze which patient factors are associated with the participation in rSCS in Germany and (2) to investigate reasons for nonparticipation. PATIENTS AND METHODS: Participants and nonparticipants of rSCS (≥ 35 years) were recruited in routine care in nine dermatological outpatient clinics. Reasons for (non-)participation, knowledge about skin cancer as well as clinical and socioeconomic data were obtained. Stratified by groups, descriptive analyses and binary logistic regression analyses for associations with participation were performed. RESULTS: Of the 294 rSCS participants and 162 non-participants, 46.5% were male with a mean age of 54.5 ± 12.7 years. In total, 87.1% had sunburns in childhood and 47.1% used sunbeds before. Higher age, female gender, previous sunbed use, and concern for and knowledge of skin cancer were significantly associated with previous rSCS participation. Of the non-participants, 46% were unaware of the option for free rSCS and 40% justified their nonparticipation on the basis of feeling healthy. CONCLUSIONS: The reasons for nonparticipation in rSCS, such as sociodemographic characteristics and risk behavior, should be known in order to optimize rSCS programs.
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Detección Precoz del Cáncer , Neoplasias Cutáneas , Humanos , Neoplasias Cutáneas/epidemiología , Neoplasias Cutáneas/diagnóstico , Alemania/epidemiología , Masculino , Femenino , Persona de Mediana Edad , Adulto , Participación del Paciente/estadística & datos numéricos , Anciano , Conocimientos, Actitudes y Práctica en Salud , Factores de Riesgo , Quemadura Solar/epidemiología , Quemadura Solar/prevención & control , Baño de Sol/estadística & datos numéricos , Baño de Sol/legislación & jurisprudenciaRESUMEN
OBJECTIVE: Sexual minority men experience disproportionately elevated rates of skin cancers, likely driven by excess ultraviolet radiation exposure-namely through tanning behaviors. However, limited integrated theoretical models exist to explain sexual minority men's elevated skin cancer risk. The aim of the current study is to further test and refine an integrated theory of skin cancer risk behaviors among sexual minority men by incorporating minority stress into the integrated health behavior model of tanning. METHOD: The study employed a parallel mixed methods design, with a Phase 1 qualitative stage (N = 30) and a Phase 2 quantitative stage (Model 1: N = 320; Model 2: N = 319). In both phases, participants were sexual minority men, equally stratified as those with versus without recent tanning exposure and were recruited from across the United States. RESULTS: Qualitative and quantitative data supported the overall integrated model, with some quantitative paths varying depending on the tanning behavior outcome. Overall, appearance-related motives to tan and beliefs that tanning regulates affect emerged as the most consistent proximal predictors. Minority stress significantly predicted holding more positive attitudes toward tanning as an effective affect regulation strategy. CONCLUSIONS: The results from this mixed methods study support the inclusion of minority stressors into the adapted integrative health behavior model of tanning. Replication within prospective designs would strengthen the evidence for this model, which may be helpful in guiding future skin cancer prevention programs tailored to sexual minority men. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Minorías Sexuales y de Género , Neoplasias Cutáneas , Baño de Sol , Humanos , Masculino , Minorías Sexuales y de Género/psicología , Neoplasias Cutáneas/prevención & control , Adulto , Baño de Sol/psicología , Adulto Joven , Persona de Mediana Edad , Estados Unidos , Estrés Psicológico/psicología , Asunción de Riesgos , AdolescenteRESUMEN
BACKGROUND: Adolescents infrequently use sun protection and engage in intentional tanning more frequently compared to other age groups, leading to increased ultraviolet radiation (UVR) exposure that heightens skin cancer risk across the lifespan. High schools are therefore an ideal setting for offering skin cancer preventive interventions. Yet, there are limited UVR protection interventions for high school students, especially those that are personalized, tested using randomized designs, and include long-term outcome assessment to determine the durability of intervention effects. METHOD: The Sun-safe Habits Intervention and Education (SHINE) cluster-randomized trial will test a novel, personalized intervention that targets high school adolescents' sun protection and tanning behaviors, and tracks their outcomes for up to one year following intervention. Enrolled high schools will be randomized to receive either the personalized SHINE intervention, which includes facial UVR photographs and sun protection action planning, or standard education using publicly available materials. Students in both conditions will receive information about skin cancer, sun protection, and skin self-examination. Outcome variables will include students' sun protection and tanning behaviors and sunburn occurrence. Potential moderators (e.g., race/ethnicity) and mediators (e.g., self-efficacy) will also be assessed and tested. CONCLUSIONS: This trial examines the efficacy of a personalized intervention targeting sun protection and tanning of high school students. The project will lead to new scientific understanding of the theoretical mechanisms underlying outcomes and moderators of the intervention effects, which will inform future intervention tailoring to meet the needs of vulnerable subgroups.
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Neoplasias Cutáneas , Quemadura Solar , Humanos , Adolescente , Neoplasias Cutáneas/prevención & control , Quemadura Solar/prevención & control , Femenino , Protectores Solares/uso terapéutico , Protectores Solares/administración & dosificación , Masculino , Educación en Salud/organización & administración , Educación en Salud/métodos , Rayos Ultravioleta/efectos adversos , Baño de Sol , Servicios de Salud Escolar/organización & administración , Conductas Relacionadas con la Salud , Autoexamen/métodosRESUMEN
BACKGROUND: Chronic nonextreme sun exposure induces two mechanisms of skin pigmentation, causing immediate darkening and delayed tanning. A new molecule, 2-mercaptonicotinoyl glycine (2-MNG), has been shown in vitro to inhibit both immediate darkening and new melanin synthesis via covalent conjugation of the thiol group of 2-MNG to melanin precursors. OBJECTIVE: To evaluate 2-MNG in preventing both mechanisms in vivo. METHODS: In a randomized, intra-individual and controlled study, 33 subjects with melanin-rich skin were exposed to UV daylight on designated areas on the back and treated with a cosmetic formula containing 0.5% or 1% 2-MNG alone or 0.5% 2-MNG in association with lipohydroxy acid (LHA, 0.3%) plus Mexoryl-SX (MSX, 1.5%). The respective vehicles were used as controls and 4-n-butyl-resorcinol (4-n-BR, 2.5%) as a positive reference. RESULTS: 2-MNG alone significantly reduced immediate darkening and inhibited new melanin production when compared with vehicle, with higher performance at 1% than at 0.5%. 2-MNG at 0.5% in association with LHA and MSX showed significantly higher performance than 2-MNG 0.5% alone. 2-MNG at 0.5% and 1% showed significantly better performance than 4-n-BR. CONCLUSIONS: 2-MNG inhibited both UV-induced skin pigmentation mechanisms in vivo. The association of 2-MNG with LHA plus MSX showed the highest efficacy on melanin-rich skin with pigmentation induced by UV exposure.
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Glicina , Pigmentación de la Piel , Rayos Ultravioleta , Humanos , Adulto , Rayos Ultravioleta/efectos adversos , Femenino , Pigmentación de la Piel/efectos de los fármacos , Pigmentación de la Piel/efectos de la radiación , Masculino , Glicina/farmacología , Glicina/administración & dosificación , Glicina/análogos & derivados , Melaninas/efectos de la radiación , Voluntarios Sanos , Adulto Joven , Persona de Mediana Edad , Baño de Sol , Piel/efectos de la radiación , Piel/efectos de los fármacos , Piel/metabolismoAsunto(s)
Acné Vulgar , Baño de Sol , Humanos , Acné Vulgar/economía , Adolescente , Baño de Sol/economía , Autocuidado , Femenino , MasculinoRESUMEN
BACKGROUND: Frequent exposure to ultraviolet light has more detrimental and longer-term effects on the skin in early life than in adulthood. Teenagers with strong sun-seeking behaviors may be more likely to use an indoor tanning bed than those who seek less sun. We aimed to examine associations between sun-seeking behaviors and indoor tanning behavior during high school/college in US females. METHODS: In this cross-sectional study, we used data from The Nurses' Health Study II, a large prospective cohort of US female nurses. We included a total of 81,746 white females who provided responses on the average annual frequency of indoor tanning during high school/college. Our study exposures were number of times/week spent outdoors in a swimsuit and percentage of time wearing sunscreen at the pool/beach as a teenager, weekly hours spent outdoors in direct sunlight during the daytime during high school/college, and number of severe sunburns that blistered between ages 15-20 years. The main outcome was annual frequency of indoor tanning bed usage during high school/college. RESULTS: In multivariable-adjusted logistic regression, we demonstrated positive associations between sun-seeking behaviors and indoor tanning use. Specifically, teenagers who spent 7 times/week outdoors in a swimsuit (adjusted odds ratio [aOR], 95% confidence interval [CI] for daily vs. <1/week: 2.68, 1.76-4.09) were more likely to use indoor tanning beds ≥ 12 times/year. Teenagers with ≥ 10 sunburns (aOR, 95% CI for ≥ 10 vs. never: 2.18, 1.53-3.10) were more likely to use indoor tanning beds ≥ 12 times/year. Also, teenagers/undergraduates who spent ≥ 5 h/week outdoors in direct sunlight (aOR, 95% CI for ≥ 5 h/week vs. <1 h/week: 2.18, 1.39-3.44) were more likely to use indoor tanning ≥ 12 times/year. However, there was not a significant association between average usage of sunscreen at the pool/beach and average usage of indoor tanning beds. Multivariable-adjusted linear regression models also showed similar results. CONCLUSIONS: Teenagers who spent more time outdoors in a swimsuit/direct sunlight or got more sunburns tended to use indoor tanning more frequently. These findings provide evidence that teenagers with stronger sun-seeking behaviors may have more exposure to artificial ultraviolet radiation as well.
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Enfermeras y Enfermeros , Neoplasias Cutáneas , Baño de Sol , Quemadura Solar , Adolescente , Humanos , Femenino , Rayos Ultravioleta/efectos adversos , Protectores Solares/uso terapéutico , Estudios Transversales , Estudios Prospectivos , Blanco , Neoplasias Cutáneas/epidemiología , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/prevención & control , Luz Solar , Instituciones Académicas , Conductas Relacionadas con la SaludRESUMEN
BACKGROUND: Tanning beds were classified as first-group carcinogens in 2009. Nonetheless, research shows that people in industrialized Western countries use tanning beds. Based on the National Cancer Aid Monitoring (NCAM) including representative data on 28,000 individuals from Germany, we quantified the prevalence as a trend from 2015 to 2022, identified determinants of tanning bed use and analysed risk awareness and reasons for use. METHODS: We used NCAM data from 2015 to 2022 to analyse the trends in the prevalence of tanning bed use (n = 28,000). To determine the characteristics of tanning bed users, risk awareness and reasons, we combined data from the waves 2019 to 2022 (n = 16,000, 49.2% female, 16-65 years) in a pooled dataset to have sufficient power to detect even smaller associations. RESULTS: Tanning bed use decreased to 5.1% in 2022. The use of tanning beds in spas, fitness and beauty facilities increased, except during the COVID-19 pandemic, while the use in tanning salons decreased. Typical tanning bed users were female, middle-aged, occupied, higher educated, had an immigrant background and were former or current smokers. Risk awareness was the lowest among the current users. The most frequently mentioned reasons were relaxation, enhancement of attractiveness and pre-tanning. DISCUSSION: Our nationwide representative data showed that the prevalence of indoor tanning has decreased. Of concern are the lower risk awareness among current users and the shift in place of use towards facilities associated with health and wellness. To further reduce the use of tanning beds, targeted information, educational campaigns and extended legislation are considered helpful.
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Neoplasias Cutáneas , Baño de Sol , Persona de Mediana Edad , Humanos , Femenino , Masculino , Pandemias , Rayos Ultravioleta/efectos adversos , Neoplasias Cutáneas/epidemiología , Neoplasias Cutáneas/etiología , Alemania/epidemiología , Moléculas de Adhesión de Célula Nerviosa , Industria de la BellezaRESUMEN
Sunless tanning products have risen in popularity as the desire for a tanned appearance continues alongside growing concerns about the deleterious effects of ultraviolet radiation exposure from the sun. Dihydroxyacetone (DHA) is a simple carbohydrate found nearly universally in sunless tanning products that serves to impart color to the skin. The Food and Drug Administration (FDA), which regulates sunless tanning products as cosmetics, allows DHA for external use while maintaining that its ingestion, inhalation, or contact with mucosal surfaces should be avoided. Given its widespread use and a paucity of reviews on its safety, we aim to review the literature on the topical properties and safety profile of DHA. Available data indicate that DHA possesses only minimal to no observable photoprotective properties. In vitro studies suggest that, while DHA concentrations much higher than those in sunless tanning products are needed to induce significant cytotoxicity, even low millimolar, nonlethal concentrations can alter the function of keratinocytes, tracheobronchial cells, and other cell types on a cellular and molecular level. Instances of irritant and allergic contact dermatitis triggered by DHA exposures have also been reported. While no other side effects in humans have been observed, additional studies on the safety and toxicity of DHA in humans are warranted, with a focus on concentrations and frequencies of DHA exposure typically encountered by consumers.
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Cosméticos , Baño de Sol , Humanos , Dihidroxiacetona/efectos adversos , Rayos Ultravioleta/efectos adversos , Cosméticos/efectos adversos , Pigmentación de la PielRESUMEN
PURPOSE: The Swedish Tattoo and Body Modifications Cohort (TABOO) cohort was established to provide an infrastructure for epidemiological studies researching the role of tattoos and other body modifications as risk factors for adverse health outcomes. It is the first population-based cohort with detailed exposure assessment of decorative, cosmetic, and medical tattoos, piercing, scarification, henna tattoos, cosmetic laser treatments, hair dyeing, and sun habits. The level of detail in the exposure assessment of tattoos allows for investigation of crude dose-response relationships. PARTICIPANTS: The TABOO cohort includes 13 049 individuals that participated in a questionnaire survey conducted in 2021 (response rate 49%). Outcome data are retrieved from the National Patient Register, the National Prescribed Drug Register and the National Cause of Death Register. Participation in the registers is regulated by Swedish law, which eliminates the risk of loss to follow-up and associated selection bias. FINDINGS TO DATE: The tattoo prevalence in TABOO is 21%. The cohort is currently used to clarify the incidence of acute and long-lasting health complaints after tattooing based on self-reported data. Using register-based outcome data, we are investigating the role of tattoos as a risk factor for immune-mediated disease, including hypersensitisation, foreign body reactions and autoimmune conditions. FUTURE PLANS: The register linkage will be renewed every third year to update the outcome data, and we have ethical approval to reapproach the responders with additional questionnaires.
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Baño de Sol , Tatuaje , Humanos , Tatuaje/efectos adversos , Tabú , Suecia/epidemiología , Encuestas y CuestionariosRESUMEN
Indoor tanning (IT) is an avoidable skin cancer risk. Although numerous communication interventions have been assessed for IT deterrence, less attention has been paid to the persuasive messages within these interventions. This scoping review summarizes the current peer-reviewed literature on persuasive messages for IT. Overall, 20 articles (21 studies) were included. Most were experimental or quasi-experimental and conducted in the US. Participants were mostly young women who had tanned indoors before. Few studies evaluated persuasive theme; in those that did, health and appearance themes were effective. Narrative and statistical evidence formats were also effective. The included studies also supported normative messages, loss-framed messages, and images. Improved reporting on message design and evaluation would be beneficial for future evidence synthesis. Our understanding of persuasive messages for IT has expanded in recent years, but more research is needed to optimize them.