Beverages Consumption and Oral Health in the Aging Population: A Systematic Review

Eating behaviors, oral health care knowledge, and oral hygiene practices among residents in Fujian province, China: a cross-sectional study

BACKGROUND

There is little literature that focuses on eating behaviors, oral health care knowledge and oral hygiene habits at the same time. People's oral health is affected by a variety of factors. This study investigated the eating behaviors, oral health care knowledge, and oral hygiene practices among residents of Fujian province, China, with different gender, age, and educational attainment.

METHODS

A self-administered questionnaire was designed and distributed through the online questionnaire platform, Questionnaire Star. After excluding unqualified responses (due to excessively short completion time, conflicting answers, etc.), an Excel database was constructed. Frequency counts (composition ratio) were used to characterize data distribution, and the chi-square test was used to compare self-reported oral health, eating behaviors, oral health care knowledge, and oral hygiene practices across different age, gender, and educational attainment of respondents. Data were analyzed using IBM SPSS (version 26.0), and differences were considered statistically significant at P < 0.05.

RESULTS

A total of 10,480 individuals completed the online questionnaire, with 8,254 questionnaires deemed valid, yielding a validity rate of 78.76%. Significant differences were observed in various aspects of eating behaviors among respondents of different age, gender, and educational attainment (P < 0.001), except for the consumption of fruit juice and hard foods. There was a significant difference in self-reported oral health status among respondents by age and education (P ≤ 0.001), while the difference by gender was not significant (P = 0.303). The respondents displayed inadequate oral health care knowledge, with significant disparities among respondents of different age, gender, and educational attainment (P < 0.05). There were also significant differences in oral hygiene practices among respondents of different age, gender, and educational attainment (P < 0.05).

CONCLUSIONS

Eating behaviors, oral health care knowledge and oral hygiene practices of Fujian residents were related to age, gender and education attainment. Educational attainment was an important factor influencing the eating behaviors, oral health knowledge and oral hygiene practices of the population. Local residents' knowledge of oral health care was generally insufficient.

Health-Related Behaviour Clusters and Functional Dentition in Older People

OBJECTIVES

To identify different clusters of health-related behaviours and examine whether these clusters are associated with maintaining 20 or more teeth.

BACKGROUND

Engaging in risky behaviours impacts tooth loss, particularly among older adults. Maintaining 20 teeth is a challenge for this age group. The co-occurrence of health-risk behaviours is common and has been linked to an increased risk of multiple chronic diseases, including tooth loss.

MATERIAL AND METHODS

A cross-sectional analysis of wave 7 of the English Longitudinal Study of Ageing (ELSA) was conducted. Functional dentition was self-reported as having 20 or more teeth. Four health-related behaviours (smoking, alcohol intake, fruit and vegetable consumption, and physical activity) were analysed to investigate their association with functional dentition. Demographic characteristics (sex, age, ethnicity) and socioeconomic factors (education, wealth) were included as covariates. Latent Class Analysis (LCA) was conducted using four dichotomised behaviour variables to identify clusters of behaviours. Logistic regression modelling was used to examine the association between clusters of health-related behaviours and functional dentition. The model was adjusted for demographic and socioeconomic factors.

RESULTS

A total of 7783 participants were included. The LCA model identified three clusters: (1) risky, (2) moderate and (3) healthy. In the fully adjusted logistic regression model, the odds of having a functional dentition were 1.42 higher among those in the moderate cluster (95% CI: 1.23, 1.65), and 1.70 higher among those in the healthy cluster (95% CI: 1.39, 2.09) than for participants in the risky cluster.

CONCLUSION

Risky behaviours tend to cluster among older adults. Engaging in multiple risky behaviours is associated with having fewer than 20 teeth. Initiatives and public health campaigns that focus on these clustering patterns, as well as the underlying factors, could benefit both oral and general health.

Sugar-sweetened beverages: taxation evidence from seven European countries and recommendations for implementation in other EU regions

OBJECTIVES

Higher-than-recommended sugar consumption (< 10% of total energy intake; WHO) leads to negative health impacts and the development of serious diseases. Sugar-sweetened beverages (SSBs) proved to be among the leading sources of free sugar intake, as they contain large amounts of added sugar. Our article aims to propose tax measures that will help change consumer behaviour and reduce SSBs consumption.

METHODS

For a comparison of the forms of taxation, the experience of seven countries (Denmark, France, Hungary, Italy, Poland, Catalonia - Spain, and the UK) were analysed. The evolution of sugar consumption, consumption of sweetened drinks and obesity before and after the introduction and/or abolition of the sugar tax were reviewed.

RESULTS

States that implemented a tax on SSBs were able to reduce SSBs consumption in the first year after the tax was introduced when states with a sugar-content-based tax have implemented it more effectively than states with a volume-based tax. Based on this finding, we propose basic design assumptions for the tax that can be used in European countries that have not yet introduced the tax. Progressive taxation divides beverages into 3 bands. The basic assumption is to encourage the desired consumer behaviour, i.e., consumption of SSBs with lower sugar content. The proposed tax design is applied to the conditions of the Czech Republic as a model case study.

CONCLUSIONS

The results of our study suggest that SSBs taxation could be an effective policy intervention to improve population health by reducing the health impacts of SSBs among children and adolescents, although further studies are needed to prove the causality of the described associations.

Visualization obesity risk prediction system based on machine learning

Obesity is closely associated with various chronic diseases.Therefore, accurate, reliable and cost-effective methods for preventing its occurrence and progression are required. In this study, we developed a visualized obesity risk prediction system based on machine learning techniques, aiming to achieve personalized comprehensive health management for obesity. The system utilized a dataset consisting of 1678 anonymized health examination records, including individual lifestyle factors, body composition, blood routine, and biochemical tests. Ten multi-classification machine learning models, including Random Forest and XGBoost, were constructed to identify non-obese individuals (BMI < 25), class 1 obese individuals (25 ≤ BMI < 30), and class 2 obese individuals (30 ≤ BMI). By evaluating the performance of each model on the test set, we selected XGBoost as the best model and built the visualized obesity risk prediction system based on it. The system exhibited good predictive performance and interpretability, directly providing users with their obesity risk levels and determining corresponding intervention priorities. In conclusion, the developed obesity risk prediction system possesses high accuracy and interactivity, aiding physicians in formulating personalized health management plans and achieving comprehensive and accurate obesity management.

Experience of Discrimination and Oral Health Self-Perception: A Cross-Sectional Study among Brazilian Adults

This cross-sectional study investigated the association between experiences of discrimination and oral health self-perception among a probabilistic cluster sample of Brazilian adults who participated in the 2013 National Health Survey. Oral health self-perception was categorized into three groups (very good + good; fair; poor + very poor). Reported experiences of discrimination included attributions based on the respondent's race/skin color, social class, income, occupation, illness, sexual orientation, religion, sex, and age. Covariates included sociodemographic data, oral health conditions, access to healthcare services, health habits, mental health, and participation in social and/or religious activities. Data were analyzed using ordinal logistic regression for non-proportional odds, considering sample weights and complex samples. Among 60,202 adults, 5.84% perceived their oral health as poor + very poor, with a significantly higher proportion among those experiencing discrimination (9.98%). Adults who experienced discrimination were 1.39 times more likely to report a "poor/very poor/fair" oral health self-perception compared to those who did not experience discrimination. Those who suffered discrimination were 1.28 times more likely to have a "very poor/poor" oral health self-perception than their counterparts who were not affected by discrimination. These findings underscore the importance of considering discrimination experiences as part of the social determinants influencing oral health.

The role of differential exposure and susceptibility to heavy drinking linking income inequalities and tooth loss: An investigation of the alcohol harm paradox using a four-way decomposition analysis

OBJECTIVES

To examine the extent to which the effect of income inequalities on tooth loss is attributable to differential exposure and susceptibility to heavy drinking in older Brazilian adults.

METHODS

We conducted a secondary analysis using data from The Brazilian Longitudinal Study of Ageing (ELSI-Brazil 2015-2016), a nationally representative sample of community-dwelling people aged 50 years and over. Causal mediation analysis based on the counterfactual outcome framework decomposed the effect of income on tooth loss mediated by heavy drinking into four components (four-way decomposition): controlled direct effect (neither mediation nor interaction), reference interaction (interaction only), mediated interaction (both mediation and interaction) and pure indirect effect (mediation only). Proportions of effect attributable to each component were calculated to estimate the differential exposure (the sum of the third and fourth components) and differential susceptibility (the sum of the second and third components) to heavy drinking.

RESULTS

The analytical sample comprised 8114 participants. After adjusting for covariates, 7.3% (95% CI: 3.8%; 10.9%) and -39.5% (95% CI: -75.8%; -3.3%) of the effects of income on tooth loss were attributable to differential exposure and susceptibility to heavy drinking, respectively, consistent with the alcohol harm paradox. When setting non-functional dentition as outcome, only the effect of differential susceptibility remained (-81.7% [95% CI: -128.2%; -35.2%]).

CONCLUSION

Our findings suggest that individuals of low-income groups appear to be more susceptible to the effects of heavy drinking on tooth loss.

Systematic review of longitudinal studies on the association between cluster of health-related behaviors and tooth loss among adults

OBJECTIVES

To systematically review longitudinal studies on the association between cluster of/multiple health-related behaviors and tooth loss among adults.  Materials and methods: Inclusion criteria were prospective and retrospective longitudinal studies; adults; multiple or cluster of behaviors; tooth loss, one or more tooth lost and complete tooth loss. Exclusion criteria were intervention studies; cross-sectional studies; case-control studies; children under 18 years-old; single behavior. Two reviewers searched three databases up to April 2023. Open Grey and Google Scholar were searched for grey literature.  Results: Twelve longitudinal studies were included in this review. Nine studies had good quality, two had poor quality, and one had fair quality according to New-Castle-Ottawa Scale. According to ROBINS-E tool, nine studies were judged as moderate risk of bias while two studies were at low risk of bias and one study had serious risk of bias. One study assessed cluster of behavior, while others examined a number of separate health-related behaviors in relation to tooth loss. Meta-analysis was not feasible because of the high heterogeneity in exposure, measure of outcomes, covariates, sample size, and follow-up time. The research found an association between tooth loss and oral hygiene practices (two studies), dental attendance (four studies), smoking (six studies), and alcohol consumption (three studies).  Conclusion: This review provides evidence of a longitudinal association between cluster of/multiple health related-behaviors and tooth loss.

Personalizing Nutrition Strategies: Bridging Research and Public Health

In recent years, although life expectancy has increased significantly, non-communicable diseases (NCDs) continue to pose a significant threat to the health of the global population. Therefore, eating habits have been recognized as key modifiable factors that influence people's health and well-being. For this reason, it is interesting to study dietary patterns, since the human diet is a complex mixture of macronutrients, micronutrients, and bioactive compounds, and can modulate multiple physiological processes, including immune function, the metabolism, and inflammation. To ensure that the data we acquired were current and relevant, we searched primary and secondary sources, including scientific journals, bibliographic indexes, and databases in the last 15 years with the most relevant articles. After this search, we observed that all the recent research on NCDs suggests that diet is a critical factor in shaping an individual's health outcomes. Thus, cardiovascular, metabolic, mental, dental, and visual health depends largely on the intake, habits and patterns, and nutritional behaviors. A diet high in processed and refined foods, added sugars, and saturated fats can increase the risk of developing chronic diseases. On the other hand, a diet rich in whole, nutrient-dense foods, such as vegetables, fruits, nuts, legumes, and a high adherence to Mediterranean diet can improve health's people.

Association between tea types and number of teeth: a cross-sectional study of the Chinese Longitudinal Healthy Longevity Survey

BACKGROUND

Previous studies have suggested that tea consumption may have a positive impact on oral health. However, the effects of different tea types on oral health remain unclear. Therefore, this study aimed to determine the association between residual teeth and consumption habits of different types of tea (green tea, black tea, oolong tea, and scented tea) in older adults.

METHODS

We conducted a secondary analysis using data from the Chinese Longitudinal Healthy Longevity Survey in 2018. In a sample of 6,387 older adults, we performed logistic regression analysis to examine the relationship between persistent tea consumption and oral health according to sex and brushing frequency. The indices for particularly healthy oral health and relative health were set at more than 20 teeth and more than 10 teeth, respectively.

RESULTS

The study included 2,725 males and 3,662 females, both aged 65 and older. Among individuals with more than 20 teeth, drinking green tea significantly improved oral health in men (adjusted odds ratio [ORs]: 1.377; 95% confidence interval [CI]: 1.082-1.752) and drinking black tea significantly improved the oral health of women (ORs: 2.349, 95%CI: 1.028-5.366). In the daily brushing group, green tea had a significant beneficial effect on increasing the number of teeth in men and black tea had a significant beneficial effect in women. Among individuals with more than 10 teeth, drinking green tea significantly improved oral health in men (ORs: 1.539; 95% CI: 1.209-1.959) and drinking green tea and scented tea significantly improved the oral health of women (ORs: 1.447, 95%CI: 1.052-1.991; ORs: 1.948, 95%CI: 1.137-3.340). In the daily brushing group, consumption of green tea and black tea had significant beneficial effects on increasing the number of teeth in men, whereas that of green tea, black tea, and scented tea had significant beneficial effects in women.

CONCLUSION

Long-term green tea consumption in males and black tea consumption in females were significantly associated with maintaining functional dentition (≥20 teeth). Similarly, long-term green tea consumption in males and green tea and scented tea consumption in females were associated with avoiding severe tooth loss (≥10 teeth). Furthermore, in the daily tooth brushing group, long-term consumption of black tea was associated with avoiding severe tooth loss in both sexes. However, tea consumption alone had no effect on oral health without good brushing habits.

Evidence pertaining to modifiable risk factors for oral diseases: an umbrella review to Inform oral health messages for Australia

The aim of this umbrella review was to collate and appraise the evidence base regarding modifiable risk factors for the prevention of oral diseases to inform the update of the Oral Health Messages for Australia. Eleven questions related to modifiable risk factors and dental disease were investigated. Electronic databases (Medline, Embase and PubMed) were searched from January 2010 to October 2022. Systematic reviews evaluating interventions/exposures in healthy subjects from high-income countries, where Westernized practices, oral health promotion and healthcare systems are similar to Australia, were included. Quality appraisal of included systematic reviews was guided by the AMSTAR tool. Of the 3637 articles identified, 29 articles met eligibility criteria. High-quality systematic reviews were identified for questions relating to diet, infant feeding, dental check-ups and oral hygiene. Free sugars consumption above 5% of energy intake, infrequent toothbrushing, smoking/vaping and alcohol intake were consistently associated with poorer oral health outcomes. Breastfeeding up to the age of 24 months was not associated with an increased risk of early childhood caries. The use of interdental cleaning devices and mouthguards during contact sports are likely to be effective in preventing dental disease.

Sugar-sweetened beverages and periodontal disease: A systematic review

This systematic review aims to determine the association between the consumption of sugar-sweetened beverages (SSBs) and periodontal disease. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed to conduct a literature search on five electronic databases till January 2022. Systemically healthy individuals consuming SSBs and presenting periodontal disease (gingivitis/periodontitis) were included. The modified Newcastle-Ottawa Scale and the Grading of Recommendation Assessment Development and Evaluation criteria were respectively used to assess the risk of bias and the evidence's quality. Of the 1303 eligible records identified in the initial search, ten studies (nine cross-sectional and one case-control) were selected for the final review. Among the included articles, five reported SSBs intake in the form of carbonated soft drinks, two as sugary drinks, two as soft drinks, and one as coffee with added sugar. Four studies reported gingivitis as an outcome, while the remaining six studies reported periodontitis using validated indices. The included studies were of medium to high quality. Consumption of SSBs may increase gingival bleeding, thereby gingivitis and the risk of periodontitis. Intake of added sugars like SSBs should be considered as a potential factor during gingival/periodontal risk assessment. Further studies are warranted to establish additional evidence of association.

The association of oral health with length of stay and mortality in the intensive care unit

OBJECTIVES

To analyze the relationship between the oral and systemic health status of adult patients admitted to the intensive care unit (ICU) with the length of stay and mortality.

MATERIAL AND METHODS

A daily oral examination and oral hygiene were performed in patients admitted to an adult ICU. Dental and oral lesions, systemic health status, the need for mechanical ventilation, length of stay, and mortality were registered. Multivariate linear and logistic regression analyses were performed to identify associations between length of stay and death of patients, respectively, with oral and systemic health status.

RESULTS

In total, 207 patients were included, 107 (51.7%) male. Ventilated patients presented an increased length of stay (p < 0.001), mortality (p < 0.0001), number of medications (p < 0.0001), edentulism (p = 0.001), mucous lesions and bleeding (p < 0.0001), oropharyngitis (p = 0.03), and drooling (p < 0.001) compared to non-ventilated patients. The number of days in the ICU was associated with mechanical ventilation (p = 0.04), nosocomial pneumonia (p = 0001), end-stage renal disease (p < 0.0007), death (p < 0.0001), mucous bleeding (p = 0.01), tongue coating (p = 0.001), and cheilitis (p = 0.01). Mortality was associated with length of stay in the ICU (p < 0.0001), number of medications (p < 0.0001), and the need for mechanical ventilation (p = 0.006).

CONCLUSION

ICU patients present poor oral health. Soft tissue biofilm and mucous ulcerations were associated with the length of stay in the ICU, but not with the mortality rate.

CLINICAL RELEVANCE

Mucous lesions are associated with an increased length of stay in the ICU, and critically ill patients should receive oral care to control oral foci of infection and mucous lesions.

Differences in the subgingival microbial composition associated with alcohol intake: A systematic review

Objectives

This study aimed to conduct a systematic evaluation of the literature on whether individuals exposed to alcohol intake present differences in the subgingival microbial composition compared to those unexposed.

Methods

Five databases (MEDLINE, EMBASE, LILACS, SCOPUS and Web of Science) and one source of grey literature (Google Scholar) were searched by two independent reviewers up to December 2022 according to pre-specified eligibility criteria. No restrictions were imposed regarding the date and language of publication and the periodontal status of the participants. The Newcastle-Ottawa Scale was used for methodological quality appraisal and a narrative synthesis was performed.

Results

Eight cross-sectional studies and one cross-sectional analysis nested in a cohort were considered for qualitative analysis, including data of 4636 individuals. Overall, the studies exhibited considerable heterogeneity in terms of characteristics of the participants and microbiological methods. Four studies have high methodological quality. Exposed individuals have higher overall quantity of periodontal pathogens in shallow and moderate to deep pockets. Findings on richness, relative abundance, alpha- and beta-diversity were limited and inconclusive.

Conclusion

The subgingival microbiota of individuals exposed to alcohol intake has higher overall quantity of red (i.e., P. gingivalis) and orange-complex (i.e., F. nucleatum) bacteria when compared to those unexposed.

Bovine Milk and Yogurt Affect Oral Microorganisms and Biofilms In-Vitro

PURPOSE

To evaluate the effect of bovine milk and yogurt on selected oral microorganisms and different oral biofilms.

MATERIALS AND METHODS

Milk was prepared from 0.5% fat (low-fat) and 16% fat (high fat) milk powder. For yogurt preparation, the strains Lactobacillus delbrueckii ssp. bulgarcius and Streptococcus thermophilus were added to the milk. Minimal inhibitory concentrations (MIC) and minimal microbiocidal concentrations (MMC) of the test compounds were measured against various microorganisms by the microbroth dilution technique. Cariogenic periodontal biofilms and one containing Candida were created on plastic surfaces coated with test substances. Further, preformed biofilms were exposed to the test substances at a concentration of 100% for 10 min and thereafter 10% for 50 min. Both colony forming units (cfu) and metabolic activity were quantified in the biofilms.

RESULTS

Neither high-fat milk, low-fat milk nor casein inhibited the growth of any species. Yogurt and L. delbrueckii ssp. bulgaricus at low MIC and MMC suppressed the growth of Porphyromonas gingivalis and other bacteria associated with periodontal disease. High-fat yogurt decreased cfu in the forming periodontal biofilm by 90%. Both low- and high-fat yogurts reduced metabolic activity in newly forming and preformed periodontal and Candida biofilms, but not in the cariogenic biofilm.

CONCLUSIONS

Yogurt and L. delbru eckii ssp. bulgaricus, but not milk, were bactericidal against periodontopathogenic bacteria. Yoghurt reduced the metabolic activity of a Candida biofilm and a periodontal biofilm. Yogurt and L. delbrueckii ssp. bulgaricus may have potential in prevention and therapy of periodontal diseases and Candida infections.

Evaluation of the Association between Amount and Type of Milk Consumption and Periodontitis: Data from the Korea National Health and Nutrition Examination Survey (2016-2018)

This study evaluated the association between the consumption of milk and having severe periodontitis. It is based on the information from the 2016-2018 Korea National Health and Nutrition Examination Survey. Severe periodontitis was characterized as a community periodontal index of code 4. A total of 18,034 individual respondents (7835 men and 10,199 women) without missing values were included in this study. Adjusted odds ratios and a 95% confidence interval of periodontitis in a multivariate logistic regression model for the amount of milk consumption were 0.774 [0.633-0.945] after the adjustment of confounding factors. This trend was maintained in a subgroup analysis of males with adjusted odds ratios, with a 95% confidence interval of 0.705 [0.538-0.924]. Overall, the findings showed a negative association between Korean adults' milk consumption and the prevalence of severe periodontitis. Men with higher milk consumption were more likely to have a lower prevalence of severe periodontitis regardless of age, body mass index, smoking or drinking habits, education, income, region, and physical exercise, diabetes mellitus, hypertension, metabolic syndrome, white blood cell count and toothbrushing frequency. By contrast, in women, the amount of milk consumption was not significantly associated with severe periodontitis. The amount of milk consumed was discovered to be a potential risk indicator for severe periodontitis in men in this study.

Oral Health Behaviors and Oral Health-Related Quality of Life Among Dental Patients in China: A Cross-Sectional Study

Background and Purpose

Oral health plays an important role in overall health. But little is known about the problems with oral health behaviors and oral health-related quality of life (OHRQoL) among dental patients in China. This study aimed to investigate oral health behaviors and OHRQoL, as well as to examine the effects of oral health behaviors and associated factors on OHRQoL among dental patients.

Methods

This cross-sectional study was conducted from June 2022 to July 2022 in the Department of Stomatology of the First Mobile General Hospital of Armed Police, Hebei, China. The five-item short form of the Oral Health Impact Profile (OHIP-5) was used to evaluate OHRQoL. Oral health behaviors were assessed by a 16-items oral health behavior questionnaire, and socio-demographic data were collected by a socio-demographic questionnaire. The t-test, one-way ANOVA, and multiple linear regression analysis were used to investigate the associations between the study variables.

Results

186 participants were included in the study. The average age of the participants was 24.62 years (SD = 10.67). The mean OHIP-5 score was 4.31 (SD =3.35). Oral health-related quality of life differed significantly by smoking history, history of alcohol consumption, work status, economic pressure, self-rated oral health status, daily brushing frequency, dental caries condition, and whether they take the initiative to learn about oral health. Multivariate analysis found that the self-rated oral health status and work status were significantly associated with the OHIP scores. The retired people and those with poor self-rated oral health displayed poor OHRQoL.

Conclusion

In general, dental patients' oral health needs to be improved, the majority of patients reported practicing poor oral health behaviors, among which the retired population and hose with poor self-rated oral health showed poor OHRQoL. OHRQoL in dental patients is a complex issue associated with social and behavioral factors.

The contradictory effects of coffee intake on periodontal health: a systematic review of experimental and observational studies

Background: Drinking coffee is known to have both positive and negative aftermath on periodontal health. The current study is aiming to systematically review the impact of coffee consumption on periodontal health status. Methods: An article search was carried out in two electronic databases (PUBMED and Web of Sciences). All type of experimental and observational studies were included. The assessment of the included articles were conducted using Joanna Briggs Institute (JBI) critical appraisal tool. Data were analyzed qualitatively. Result: A total of 10 articles were included in this study. Most (5) of the studies discovered a negative correlation between coffee intake and periodontal health, while 4 other studies found the protective effect of daily coffee consumption against alveolar bone loss. Last, only one study found that coffee intake did not relate with periodontitis. Conclusion: The effect of coffee consumption on periodontal health was fragmented since coffee has complex components that may give either beneficial effects or negative impact on periodontal health.

Caffeine intake improves the cognitive performance of patients with chronic kidney disease

Objective

Cognitive impairment is a common complication of chronic kidney disease (CKD). Caffeine intake has been reported to improve cognitive performance in several studies. However, whether the benefits of caffeine intake on cognitive function apply to patients with CKD remains unknown.

Methods

We performed a retrospective cross-sectional study based on the National Health and Nutrition Examination Survey (NHANES). The data of CKD subjects and non-CKD subjects from NHANES 2011−2014 were analyzed. Propensity score matching (PSM) was performed based on age, sex, diabetes, cancer, educational level, energy intake and protein intake to select subjects. The Consortium to Establish a Registry for Alzheimer’s Disease Word Learning Test (CERAD-WL), the CERAD Word List Recall Test (CERAD-DR), the Animal Fluency Test (AF) and the Digit Symbol Substitution Test (DSST) were used, whereby the occurrence of cognitive impairment was identified. Logistic regression models were performed to evaluate the association between caffeine intake and cognitive performance in CKD and non-CKD participants. Stratified analyses according to the stage of CKD and the urinary albumin/creatinine ratio levels were performed. Plot curves were then generalized to present a non-linear relationship, and the inflection point for each non-linear model was obtained by using a recursive algorithm.

Results

Cognitive impairment was more prevalent in CKD patients than in non-CKD subjects. For CKD patients, caffeine intake was associated with higher CERAD-WL, CERAD-DR, AF and DSST scores. For non-CKD subjects, caffeine intake was associated with higher DSST scores only. Subgroup analysis revealed that caffeine only benefited the cognitive function of patients with CKD stages 2 and 3. The analysis showed non-linear relationships of caffeine intake and cognitive function for both CKD and non-CKD subjects. The inflection point of caffeine intake for CKD patients was 279 mg/day.

Conclusion

The recommended dose of caffeine intake to improve the cognitive function of CKD patients is ≤279 mg/day.

Association between tea consumption and frailty among Chinese older adults: A cross-sectional study

Background

Chronic inflammation is considered one of the main mechanisms leading to frailty. It has been demonstrated that tea consumption reduces chronic inflammation. Few epidemiological studies have investigated the association between tea consumption and frailty.

Objective

This study aimed to analyze the association between tea consumption and frailty in Chinese older adults.

Methods

Between March and May 2021, we enrolled 2,144 older adults aged ≥60 years in Jinan City, Shandong Province, China, using multi-stage stratified cluster sampling. We assessed tea consumption and frailty in older adults using the Tilburg Frailty Indicator (TFI) and the frequency of tea consumption, respectively. We applied multiple logistic regression analysis to examine the association between tea consumption and frailty, controlling for a set of potential covariates.

Results

The prevalence of frailty among older Chinese adults was 38.3% (821/2,144). Tea consumption was categorized as daily (30.4%), occasionally (20.9%), and rarely or never (48.7%). As indicated by the fully adjusted model, daily tea consumption was associated with a lower prevalence of frailty (OR = 0.73, 95%CI = 0.57–0.94). However, this association only applied to men, younger older adults aged 60–79 years, rural residents, and regular participants in community activities. In addition, we observed a linear relationship between tea consumption and the prevalence of frailty (P for trend = 0.017).

Conclusions

Higher tea consumption was associated with a lower prevalence of frailty in older adults, especially those men, older adults aged 60–79, rural residents, and individuals who regularly participated in community activities. Further longitudinal and experimental studies are needed to determine the causation between tea consumption and frailty.

Effect of Coffee on Lipopolysaccharide-Induced Immortalized Human Oral Keratinocytes

Periodontitis is a common inflammatory disease that is strongly influenced by dietary habits. Coffee is one of the most common dietary components; however, current research on the relationship between coffee consumption and periodontitis, as well as its underlying mechanisms, is limited. Based on a previous report, caffeine (CA) and chlorogenic acid (CGA) were formulated into artificial coffee (AC) for this experiment. Cell viability, prostaglandin E2 release, Western blotting, cellular reactive oxygen species (ROS) production, and NF-E2-related factor 2 (Nrf2) translocation analyses were performed to explore the effects of AC on lipopolysaccharide (LPS)-induced immortalized human oral keratinocytes (IHOKs) and elucidate their underlying mechanisms. AC pretreatment attenuated LPS-induced inflammatory mediator release, ROS production, and nuclear factor kappa B translocation in IHOKs. CA and CGA promoted AMP-activated protein kinase phosphorylation and down-regulated the nuclear factor-κB pathways to exert anti-inflammatory effects. Additionally, CGA promoted Nrf2 translocation and heme oxygenase-1 expression and showed anti-oxidative effects. Furthermore, AC, CA, and CGA components showed synergistic effects. Thus, we predict that coffee consumption may be beneficial for alleviating periodontitis. Moreover, the main coffee components CA and CGA seem to play a synergistic role in periodontitis.

Coffee Drinking and Adverse Physical Outcomes in the Aging Adult Population: A Systematic Review

Declining physical functioning covers a prominent span of later life and, as a modifiable driver to be leveraged, lifestyle plays a critical role. This research aimed to undertake a systematic review investigating the association between levels of coffee consumption and declining conditions of physical functioning during aging, such as sarcopenia, frailty, weakness, falls, and disability, while trying to explain the underlying mechanisms, both from a metabolic and social angle. The literature was reviewed from inception to May 2022 using different electronic databases, not excluding the grey literature. Two independent researchers assessed the eligibility of 28 retrieved articles based on inclusion criteria; only 10 met the eligibility requirements. Different levels of coffee consumption were considered as exposure(s) and comparator(s) according to PECO concepts, while middle age was an inclusion criterion (40+ years). No limitations were set on the tool(s) assessing physical functioning, type of dietary assessment(s), study setting, general health status, country, and observational study design (cohort, cross-sectional). The cross-sectional design outnumbered the longitudinal (90%, n = 9/10). The overall quality rating was judged poor (70%) to good (30%). It was found that higher exposure to coffee drinking is strongly associated with better physical functioning outcomes, and the findings showed consistency in the direction of association across selected reports. Countering physical decline is a considerable challenge in easing the burden of population aging. For preventive models that aim to allow a better lifestyle, it has to be kept in mind that increased coffee consumption does not lead to poor physical functioning.

Alcohol Intake Influences the Occurrence and Progression of Periodontitis Differently According to Sex and Country Sociodemographic Development: A Two-Stage Systematic Review

AIMS

To conduct an overview and systematic evaluation of prospective cohort studies on whether alcohol intake is associated with the incidence and progression of periodontitis.

METHODS

Nine databases were searched by two independent reviewers up to November 2021 according to prespecified eligibility criteria. Risk of Bias in Systematic Reviews and Risk of Bias in Non-Randomized Studies of Interventions were used for risk of bias assessment and certainty of evidence was assessed using the GRADE approach. Random-effects pair-wise meta-analyses were performed with data from cohort studies on the effects of higher levels of alcohol intake compared with current non-drinking to determine risk ratios (RR) and confidence intervals of periodontitis.

RESULTS

The four systematic reviews were at high risk of bias and concluded that alcohol intake is associated with periodontitis regardless of the study design. Five reports from seven cohort studies contributed to the meta-analyses and no statistically significant differences were found for higher levels of consumption regarding the risk of periodontitis, except for men from countries with low- and high-middle socio-demographic index (RR = 1.30, 95% CI: 1.13-1.46), with low certainty evidence.

CONCLUSION

Higher levels of alcohol consumption seem to be part of the causal mechanism of periodontitis when cooccurring with male sex in underdeveloped countries. No conclusion can be drawn regarding alcohol use disorders or patterns of consumption.