Review of epidemiological studies on drinking water hardness and cardiovascular diseases

2006 ◽  
Vol 13 (4) ◽  
pp. 495-506 ◽  
Author(s):  
Silvano Monarca ◽  
Francesco Donato ◽  
Ilaria Zerbini ◽  
Rebecca L. Calderon ◽  
Gunther F. Craun
Keyword(s):  
Drinking Water ◽  
Cardiovascular Diseases ◽  
Water Hardness ◽  
Epidemiological Studies

scholarly journals The composition of tea infusions examined in relation to the association between mortality and water hardness

1971 ◽  
Vol 69 (1) ◽  
pp. 1-15 ◽  
Author(s):  
W. Anderson ◽  
J. G. Hollins ◽  
Pamela S. Bond
Keyword(s):  
Drinking Water ◽  
Present Report ◽  
Substantial Reduction ◽  
Water Hardness ◽  
Epidemiological Studies ◽  
Substantial Part ◽  
Water Factor ◽  
Tea Infusions ◽  
Wide Range ◽  
Tea Leaf

SUMMARYRecent epidemiological studies have shown that death-rates from certain chronic diseases are higher in areas with soft than in areas with hard drinking-water. In the striking negative correlation found in the county boroughs of England and Wales between cardiovascular mortality and water hardness the important underlying factor is apparently the water calcium. Interest is therefore focused on the dietary significance of calcium present in drinking-water. In relation to that interest, the present report gives a quantitative account of the composition of tea infusions prepared with waters containing different amounts of calcium. It is shown that a substantial part of water calcium is taken up by the tea leaf during the preparation of infusions. The analysis of the infusions covers a wide range of individual components, including trace metals and polyphenolic substances. It appears that the principal change caused in infusion composition by the presence of calcium in the water is a substantial reduction in the relatively high oxalate content. The question is raised whether there may be some connexion between the ‘ water factor’ in cardiovascular disease and the absorption of oxalates from foods.

scholarly journals Hard Water, More Elastic Arteries: A Case Study from Krupina District, Slovakia

2019 ◽  
Vol 16 (9) ◽  
pp. 1521 ◽  
Author(s):  
Rapant ◽  
Cvečková ◽  
Fajčíková ◽  
Hajdúk ◽  
Hiller ◽  
...  
Keyword(s):  
Drinking Water ◽  
Cardiovascular Diseases ◽  
Arterial Stiffness ◽  
Slovak Republic ◽  
Water Hardness ◽  
Hard Water ◽  
Absolute Difference ◽  
Cardiovascular Risks ◽  
Invasive Approach ◽  
The Impact

The protective role of hard drinking water against cardiovascular diseases is well documented by numerous studies. This article describes the impact of Ca and Mg contents in the drinking water with different water hardness on the cardiovascular system (arterial stiffness, arterial age) of residents of the Krupina district, the Slovak Republic. The research was based on the measurements of arterial stiffness, including the measurements of aortic pulse wave velocity (PWVao) and the calculation of the arterial age of the residents. In total, 144 randomly selected residents were included in measurements, divided into the two groups according to Ca and Mg contents in drinking water (water hardness). The first group was supplied with soft drinking water (total dissolved solids (TDS): 200–300 mg·L−1, Ca: 20–25 mg·L−1, Mg: 5–10 mg·L−1). The second group of residents was supplied with harder drinking water (TDS: 500–600 mg·L−1, Ca: 80–90 mg·L−1, Mg: 25–30 mg·L−1). Differences in arterial stiffness between the two groups of respondents were documented. Higher arterial stiffness (low flexibility of arteries) was determined for a group of residents supplied with soft drinking water. This was reflected in higher PWVao levels, higher number of pathological cases (PWVao > 10 m·s−1), and arterial age of respondents compared to their actual age. The “absolute” difference between the arterial and actual age between the two evaluated groups of residents (soft vs. harder water) was nearly 5 years on average. The higher arterial stiffness and age of residents that consumed soft drinking water indicate the health significance of lower contents of Ca and Mg in drinking water as an environmental risk factor of cardiovascular diseases. Measuring arterial stiffness of residents in the areas supplied with soft drinking water can be used as a non-invasive approach in the prevention of cardiovascular risks.

Low-dose ionising radiation and cardiovascular diseases – Strategies for molecular epidemiological studies in Europe

2015 ◽  
Vol 764 ◽  
pp. 90-100 ◽  
Author(s):  
Michaela Kreuzer ◽  
Anssi Auvinen ◽  
Elisabeth Cardis ◽  
Janet Hall ◽  
Jean-Rene Jourdain ◽  
...  
Keyword(s):  
Cardiovascular Diseases ◽  
Low Dose ◽  
Epidemiological Studies ◽  
Ionising Radiation

On the clinical significance of HDL cholesterol at the present stage

2021 ◽  
Vol 19 (1) ◽  
pp. 50-53
Author(s):  
V. N. Oslopov ◽  
◽  
Yu. V. Oslopova ◽  
E. V. Khazova ◽  
E. R. Girfanutdinova ◽  
...  
Keyword(s):  
Cardiovascular Diseases ◽  
Blood Plasma ◽  
Clinical Studies ◽  
Hdl Cholesterol ◽  
Epidemiological Studies ◽  
Present Stage ◽  
The World ◽  
Cast Doubt ◽  
And Function ◽  
Role And Function

The leading death cause in the world is diseases of the cardiovascular system, with CHD as the leader in the structure of cardiovascular diseases. The cause of this disease is atherosclerosis. One of the possible causes of atherosclerosis is an increase in LDL-C and a decrease in HDL-C in the blood. Many epidemiological studies have reliably shown that HDL cholesterol reduces the risk of developing cardiovascular diseases. Data from recent studies cast doubt on this data. The review briefly describes the current understanding of the effect of HDL-C high levels on morbidity and mortality, lists the new approaches to assessing the role and function of these particles, presents the results of clinical studies of drugs that affect their concentration in blood plasma and the probable causes leading to an increase of the HDL-Cin content in the blood.

Subclinical Hypothyroidism as a Risk Factor for Cardiovascular Disease

2021 ◽  
Vol 15 (9) ◽  
pp. 2748-2752
Author(s):  
Roman Evgenyevich Tokmachev ◽  
Andrey Valerievich Budnevsky ◽  
Andrey Yakovlevich Kravchenko ◽  
Tatiana Alexandrovna Chernik ◽  
Sudakov Oleg Valerievich ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Risk Factor ◽  
Cardiovascular Diseases ◽  
Cause Of Death ◽  
Subclinical Hypothyroidism ◽  
Thyroid Dysfunction ◽  
Epidemiological Studies ◽  
Cardiovascular Disorders ◽  
The World

Nowadays, more than 485 million people in the world suffer from cardiovascular diseases (CVD). According to large epidemiological studies, the group of CVD is the leading cause of death in the world. One of the neurohumoral mechanisms that appears to be a risk factor for CVD is thyroid dysfunction. In this regard, in recent years, more and more attention is paid to the study the influence of subclinical hypothyroidism on the occurrence and development of cardiovascular disorders. MeSH words: cardiovascular diseases, subclinical hypothyroidism

Assessment of the drinking water quality for planning endogenic prevention of dental caries

2021 ◽  
Vol 21 (2) ◽  
pp. 88-93
Author(s):  
A. B. Shashmurina ◽  
O. L. Mishutina ◽  
V. R. Shashmurina
Keyword(s):  
Drinking Water ◽  
Dental Caries ◽  
Water Supply ◽  
Fluoride Concentration ◽  
Water Hardness ◽  
Drinking Water Supply ◽  
Ion Concentration ◽  
Normal Range ◽  
Hydrogen Ion Concentration ◽  
Normal Limits

Relevance. Dental caries is a leading dental disease in children. Aim – to study the quality of drinking water in Smolensk and its region to provide evidence for implementing dental caries preventive measures in children.Materials and methods. We took tap water samples from ten water intake points in seven districts of Smolensk and six Smolensk regions. An accredited testing laboratory of the Center for Hygiene and Epidemiology in the Smolensk Region carried out water chemical analysis. The study analyzed standard parameters of drinking water quality: pH 6.5-8.5, fluoride content 0.60-1.2 mg/l; water hardness 7.0-9.0 (Sanitary Regulations and Standards 2.1.4.1116-02). The parameter was considered normal if its 95% confidence interval was within the reference range.Results. In Smolensk, the hydrogen ion concentration in centralized drinking water supply systems is within normal limits and amounts to 7.39 (95% CI: 7.32-7.46; р < 0,05) pH units. The mean fluoride concentration in the Smolensk water is 0.19 (95% CI: 0.14-0.23; р < 0,05) mg/l, which is below the normal range. In most Smolensk districts, water hardness is within normal limits, 8.21 mmol/l (95% CI: 7.03-9.39; р < 0,05). However, the upper limit of the confidence interval of 9.39 mg/l and the maximum of 12.0 mg/l exceed the normal range. In the Smolensk region cities, the hydrogen ion concentration is 7.2 (95% CI: 7.02-7.38; р < 0,05) pH units in the centralized drinking water supply. The fluoride concentration in the Smolensk region water is 0.45 mg/l (95% CI: 0.23-0.68; р < 0,05), which demonstrates the fluoride deficiency in water. In the Smolensk region cities, mean water hardness is 6.66 mmol/l (95% CI: 6.00-7.03; р < 0,05), which is below the normal values. However, the CI upper limit of 7.03 mmol/l and the maximum of 7.05 mmol/l are within normal limits.Conclusions. The water of the centralized drinking water supply system in Smolensk and the Smolensk region is low in fluorides. Urgent community and individual preventive measures should be taken to expose children to fluoride.

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