Urban Noise Exposure and Cardiometabolic Diseases: An Exploratory Cross-Sectional Study in Lisbon

Introduction: Urban noise pollution has been associated with an increased risk of developing metabolic syndrome. Nevertheless, existing observational studies relating to noise exposure and metabolic syndrome are based on non-generalizable cohorts. Lisbon remains a noisy city where this association has not been evaluated, and for this reason, we studied the relationship between exposure to urban noise and the prevalence of type 2 diabetes mellitus, obesity, and hypertension. Methods: Diurnal, evening and nocturnal noise emission levels were obtained for each street in the city from the Lisbon noise map. After allocation of all roads to the respective parish of Lisbon, the noise emission for each parish was averaged for each day period. The number of adult patients with type 2 diabetes mellitus, obesity and hypertension in 2014, 2015 and 2016 in each parish of Lisbon was obtained from the Regional Health Administration of Lisbon and Tagus Valley. Prevalence as a percentage of the population was determined using the number of residents in each parish determined in the 2011 population census. Spearman’s non-parametric correlation coefficient was used due to the non-normal distribution of the variables, at the 5% significance level (α = 0.05). Results: No correlations were found between daytime, afternoon or night-time noise exposure and the prevalence of type 2 diabetes mellitus, obesity or hypertension, although correlations were found between the cardiometabolic variables. Nevertheless, noise levels in Lisbon were above the legally established limit and the World Health Organization guidelines for environmental noise exposure in the European region. Conclusion: Our results do not agree with previous studies and should be faced as preliminary due to a strong biological plausibility for an association between noise exposure and cardiometabolic diseases and to encourage further studies, with longitudinal cohorts.

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A Comparative assessment of Metabolic Syndrome and its association with Vitamin D and other risk factors in Type 2 Diabetes Mellitus Patients

Current Diabetes Reviews ◽

10.2174/1573399816666200716193115 ◽

2020 ◽

Vol 16 ◽

Author(s):

Ammar Abdulrahman Jairoun ◽

Moyad Jamal Shahwan ◽

Mohammed Husham Khattab

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Metabolic Syndrome ◽

Vitamin D ◽

Type 2 Diabetes Mellitus ◽

Diagnostic Criteria ◽

Biochemical Parameters ◽

World Health ◽

Diabetic Patients

Objectives: To determine the overall prevalence of metabolic syndrome using World health organization (WHO); National Cholesterol Education program (NCEP) and International diabetes federation (IDF) guidelines and to study its association with vitamin D and other biochemical parameters in patients with type 2 Diabetes mellitus, as well as to identify the set of biochemical parameters that jointly influence the metabolic syndrome using different diagnostic criteria. Methods: A cross-sectional study was carried out at private health care center. A total of 291 diabetic patients. Sociodemographic, clinical, and laboratory data were obtained from the medical records of patients. Statistical analysis was carried out using the Statistical Package for the Social Sciences (SPSS, version 23). Results: A total number of 291 patients with T2DM were included in this study. The overall prevalence of metabolic syndrome among the study subjects was 48.1%, 87.3%, 64.9% using WHO, IDF and NCEP-ATPIII criteria respectively. The highest prevalence was reported following IDF diagnostic criteria. Sex, triglyceride and fasting blood sugar were associated factors of metabolic syndrome by all the three diagnostic criteria of metabolic syndrome. Conclusion: the study revealed high prevalence rate of metabolic syndrome among type 2 diabetic patients, which was highest 87.3% according to IDF and lowest was observed in WHO criteria 48.1%. A significant variance in the prevalence of metabolic syndrome was reported between WHO, IDF and NCEP criteria.

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