---
title: "Evidence: adds magnesium and calcium"
description: "Many EU countries regulate drinking water hardness, calcium, or magnesium, but these regulations are inconsistent and often not based on current health…"
url: "https://magellanlongevity.com/study/s191.md"
canonical: "https://magellanlongevity.com/study/s191.html"
html: "https://magellanlongevity.com/study/s191.html"
type: "study"
study_key: "s191"
journal: "Regul Toxicol Pharmacol"
year: 2020
pmid: "32007436"
doi: "10.1016/j.yrtph.2020.104589"
citations: 1
updated: 2026-09-02
author: "Gabriel Radu, DO"
author_credentials: "Physiatrist (PM&R). NY medical license 275110. NPI 1376861765."
publisher: "Magellan Longevity"
content_format: "markdown"
---

# Evidence: adds magnesium and calcium

[Home](https://magellanlongevity.com/) › [Research map](https://magellanlongevity.com/longevity-research-map.html) › Evidence: adds magnesium and calcium

**HTML version:** https://magellanlongevity.com/study/s191.html · **In the Magellan app:** https://magellanlongevity.com/#/study/s191

## Citation

| Field | Value |
| --- | --- |
| Journal | Regul Toxicol Pharmacol |
| Year | 2020 |
| PMID | [32007436](https://pubmed.ncbi.nlm.nih.gov/32007436/) |
| DOI | [10.1016/j.yrtph.2020.104589](https://doi.org/10.1016/j.yrtph.2020.104589) |
| Study key | s191 |

## Takeaway

Many EU countries regulate drinking water hardness, calcium, or magnesium, but these regulations are inconsistent and often not based on current health research.

## The question

How do European Union countries regulate calcium and magnesium in drinking water, and is this regulation aligned with current scientific evidence regarding health impacts?

## Hypothesis

The abstract does not explicitly state a hypothesis, but it implies that current regulations for calcium and magnesium in drinking water in EU countries may not adequately reflect scientific evidence on health effects.

## Methods

The study involved a summary of the situation regarding drinking water quality regulations in 28 European Union countries, focusing on calcium and magnesium content or total hardness.

## Results

The current EU Drinking Water Directive does not include limits for hardness, calcium, or magnesium. However, 12 EU member states regulate these parameters through law, and 7 countries use technical guidance. Several countries also provide educational information to the public. The regulations across most countries are not based on current research and are not comparable, with some providing recommended ranges and others mandatory minimum or maximum limit values.

## Conclusion

Current drinking water quality regulations in most EU countries regarding calcium and magnesium are not consistently based on up-to-date scientific research and lack comparability. This information is intended to aid in the implementation of the revised EU Directive.

## Limitations

The abstract does not explicitly state limitations of the study itself, but it highlights the limitation of current regulations not being based on current research.

## Verbatim from the abstract

> drinking water low in magnesium increases the likelihood of cardiovascular mortality

## Where this study is used on Magellan

This paper is one of the citations behind the evidence grade on the pages below. Grades are assigned from the published research and are independent of affiliate commissions.

| Compound or device | Evidence grade | Graded pages |
| --- | --- | --- |
| Mineral Remineralization Drops | Emerging evidence | [Mineral Remineralization Drops](https://magellanlongevity.com/p/191.md) |

## Reference

1. **Evidence: adds magnesium and calcium**
   Regul Toxicol Pharmacol 2020 · [PMID 32007436](https://pubmed.ncbi.nlm.nih.gov/32007436/) · [DOI 10.1016/j.yrtph.2020.104589](https://doi.org/10.1016/j.yrtph.2020.104589)

   > drinking water low in magnesium increases the likelihood of cardiovascular mortality

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## Scope and disclosures

Educational information, not medical advice. Nothing here is intended to diagnose, treat, cure, or prevent any disease. Talk to your physician before starting any supplement or device, especially if you are pregnant, nursing, or taking medication.

Editorial firewall: evidence grades are assigned from the published research and are independent of any affiliate commission. As an Amazon Associate, Magellan Longevity earns from qualifying purchases.

Reviewed for accuracy by a board-certified physician (DO).