Electrolytes
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Evidence Summary
Electrolytes such as calcium, magnesium, sodium, and potassium are essential for maintaining physiological functions ranging from pregnancy health to cardiovascular stability. Research indicates significant benefits for specific electrolyte supplementation in pregnancy and managing chronic kidney disease, though evidence for other uses like fracture prevention remains mixed.
Evidence by Condition
Calcium supplementation is effective in preventing pre-eclampsia and related hypertensive disorders during pregnancy.
Increased calcium intake is recommended to improve both maternal and infant health outcomes.
Magnesium levels and phosphate management are critical for managing clinical outcomes and mineral-bone disorders in CKD patients.
High sodium intake is associated with an increased risk of stroke.
Evidence regarding the ability of calcium and vitamin D supplementation to prevent fractures in older adults remains inconclusive.
The effectiveness of magnesium for treating skeletal muscle cramps has not been definitively established by current meta-analyses.
Effective Doses
Specific dose ranges were not provided in the reviewed study abstracts.
Key Findings
- Calcium supplementation during pregnancy reduces the risk of pre-eclampsia (PMID: 41330480).
- High sodium intake is linked to an increased risk of stroke (PMID: 29907351).
- Calcium supplementation is recommended for improving pregnancy and infant outcomes (PMID: 39560075).
- Circulating magnesium levels are associated with clinically relevant outcomes in patients with CKD (PMID: 33419615).
Limitations
Research shows inconsistent results regarding the prevention of fractures in older adults and the efficacy of magnesium for muscle cramps. Many studies are limited to specific populations, such as pregnant women or patients with chronic kidney disease.
Safety & Interactions
High sodium intake is a known risk factor for stroke; phosphate management is a critical component of treating chronic kidney disease-mineral and bone disorder (CKD-MBD).
AI-generated summary from 846 peer-reviewed studies. Not medical advice. Always consult a healthcare provider.
Claims vs. Evidence
| Claim Type | % of Products | Evidence Required | Status |
|---|---|---|---|
| All Other | 99% | Tier D (Unclassified) | ✅ Supported |
| Structure/Function | 85% | Tier C (DSHEA Structure/Function (no pre-approval)) | ✅ Supported |
| Nutrient | 54% | Tier D (Unknown) | ✅ Supported |
| Approved Health | 3% | Tier A (FDA Approved Health Claim (21 CFR 101.9)) | ⚠️ Unsupported |
| No Claim | 0% | Tier D (No claim on label) | ✅ Supported |
| Qualified Health | 0% | Tier B (FDA Qualified Health Claim) | ✅ Supported |
🏛️ NIH ODS Factsheet
Research by Topic
⚠️ FDA Safety Data
Research Evidence (849)
BACKGROUND: Phosphate binders are used to reduce positive phosphate balance and to lower serum phosphate levels for people with chronic kidney disease (CKD) with the aim to prevent progression of chronic kidney disease-mineral and bone disorder (CKD-...
BACKGROUND: Maternal nutrition during pregnancy is known to have an effect on fetal growth and development. It is recommended that women increase their calcium intake during pregnancy and lactation, although the recommended dosage varies among profes...
BACKGROUND: Maternal nutrition during pregnancy is known to have an effect on fetal growth and development. It is recommended that women increase their calcium intake during pregnancy and lactation, although the recommended dosage varies among profes...
BACKGROUND: Vitamins and minerals play multiple functions within the central nervous system which may help to maintain brain health and optimal cognitive functioning. Supplementation of the diet with various vitamins and minerals has been suggested a...
RATIONALE: Calcium supplementation may reduce the risk of developing pre-eclampsia, a common cause of serious maternal and neonatal morbidity and death. However, its effectiveness in preventing hypertensive disorders of pregnancy is uncertain. This u...
BACKGROUND: Several dietary factors have been considered to be involved in the increasing incidence of colorectal cancer in industrialised countries. Experimental and epidemiological evidence has been suggestive but not conclusive for a protective ro...
BACKGROUND: Osteoporosis is a condition where bones become fragile due to low bone density and impaired bone quality. This results in fractures that lead to higher morbidity and reduced quality of life. Osteoporosis is considered a major public healt...
BACKGROUND & AIMS: The association of high sodium intake with risk of stroke has been accepted. But considering the proposed J/U-shaped association between sodium intake and risk of all-cause mortality, the shape of the dose-response relationship has...
**Leenders et al., 2021** | Clin Nutr | Meta Analysis Leenders Nicoline H J, Vermeulen Emma A, ... Vervloet Marc G. The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic r...
**Zhu et al., 2021** | Cochrane Database Syst Rev | Systematic Review Zhu Jiaying, Chen Ning, ... He Li. Calcium channel blockers versus other classes of drugs for hypertension. Cochrane Database Syst Rev. 2021-Oct-17;10(10):CD003654. doi:10.1002/146...
**Gan et al., 2024** | BMC Med | Meta Analysis Gan Lu, Zhao Bin, ... Huang Jiaqi. Sex-specific associations between sodium and potassium intake and overall and cause-specific mortality: a large prospective U.S. cohort study, systematic review, and up...
RATIONALE: Hypertensive disorders of pregnancy are a leading cause of maternal and perinatal morbidity and mortality. Calcium supplementation commenced before pregnancy may prevent the development of these disorders. This is an update of a review las...
IMPORTANCE: The increased social and economic burdens for osteoporosis-related fractures worldwide make the prevention of such injuries a major public health goal. Previous studies have reached mixed conclusions regarding the association between calc...
BACKGROUND: Skeletal muscle cramps are common and often occur in association with pregnancy, advanced age, exercise or motor neuron disorders (such as amyotrophic lateral sclerosis). Typically, such cramps have no obvious underlying pathology, and so...
**Zhu et al., 2022** | Cochrane Database Syst Rev | Systematic Review Zhu Jiaying, Chen Ning, ... He Li. Calcium channel blockers versus other classes of drugs for hypertension. Cochrane Database Syst Rev. 2022-Jan-09;1(1):CD003654. doi:10.1002/14651...
**Brand et al., 2022** | Cochrane Database Syst Rev | Systematic Review Brand Amanda, Visser Marianne E, ... Naude Celeste E. Replacing salt with low-sodium salt substitutes (LSSS) for cardiovascular health in adults, children and pregnant women. Coc...
**Qiu et al., 2024** | Clin Nutr | Meta Analysis Qiu Yu, Li Cantao, ... Xia Daozong. Exploring the causal associations of micronutrients on urate levels and the risk of gout: A Mendelian randomization study. Clin Nutr. 2024-Apr;43(4):1001-1012. doi:1...
BACKGROUND: Skeletal muscle cramps are common and often presented to physicians in association with pregnancy, advanced age, exercise or disorders of the motor neuron (such as amyotrophic lateral sclerosis). Magnesium supplements are marketed for the...
**Cormick et al., 2021** | Cochrane Database Syst Rev | Meta Analysis Cormick Gabriela, Ciapponi Agustín, ... Belizán José M. Calcium supplementation for prevention of primary hypertension. Cochrane Database Syst Rev. 2021-Aug-10;8(8):CD010037. doi:1...
Insufficient calcium intake during pregnancy may lead to maternal bone resorption and lower bone density of offspring. We evaluated the impact of supplementary calcium with or without vitamin D during pregnancy on maternal and offspring bone mineral ...
**Cormick et al., 2022** | Cochrane Database Syst Rev | Meta Analysis Cormick Gabriela, Ciapponi Agustín, ... Belizán José M. Calcium supplementation for prevention of primary hypertension. Cochrane Database Syst Rev. 2022-Jan-11;1(1):CD010037. doi:1...
**Dominguez et al., 2023** | Nutrients | Meta Analysis Dominguez Ligia J, Veronese Nicola, ... Barbagallo Mario. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies. Nutrients. 2023-Mar-07...
BACKGROUND: Clinical trials have shown that calcium supplementation in children can increase bone mineral density (BMD) although this effect may not be maintained. There has been no quantitative systematic review of this intervention. OBJECTIVES: . T...
BACKGROUND: Although calcium is one the simplest and least expensive strategies for preventing osteoporotic fractures calcium supplementation is nevertheless not without controversy (Kanis 1989; Nordin 1990). The Food and Drug Administration in the U...
**Del et al., 2013** | Am J Clin Nutr | Meta Analysis Del Gobbo Liana C, Imamura Fumiaki, ... Mozaffarian Dariush. Circulating and dietary magnesium and risk of cardiovascular disease: a systematic review and meta-analysis of prospective studies. Am ...
**Knightly et al., 2017** | Cochrane Database Syst Rev | Meta Analysis Knightly Rachel, Milan Stephen J, ... Powell Colin. Inhaled magnesium sulfate in the treatment of acute asthma. Cochrane Database Syst Rev. 2017-Nov-28;11(11):CD003898. doi:10.100...
BACKGROUND: Obesity is a major health problem worldwide as it can lead to high blood pressure, heart disease, stroke, diabetes, and insulin resistance. The prevalence of overweight and obesity is increasing worldwide across different age groups. Ther...
**Palmer et al., 2009** | Cochrane Database Syst Rev | Meta Analysis Palmer Suetonia C, McGregor David O, ... Strippoli Giovanni Fm. Vitamin D compounds for people with chronic kidney disease requiring dialysis. Cochrane Database Syst Rev. 2009-Oct-0...
**Aburto et al., 2013** | BMJ | Meta Analysis Aburto Nancy J, Hanson Sara, ... Cappuccio Francesco P. Effect of increased potassium intake on cardiovascular risk factors and disease: systematic review and meta-analyses. BMJ. 2013-Apr-03;346:f1378. do...
IMPORTANCE: Vitamin D and calcium supplements are recommended for the prevention of fracture, but previous randomized clinical trials (RCTs) have reported conflicting results, with uncertainty about optimal doses and regimens for supplementation and ...
BACKGROUND: Nutritional rickets is a disease which affects children, especially in low- and middle-income countries. It causes problems such as skeletal deformities and impaired growth. The most common cause of nutritional rickets is vitamin D defici...
**Kumar et al., 2024** | BMJ Paediatr Open | Meta Analysis Kumar Jogender, Kumar Prawin, ... Gupta Atul. Role of nebulised magnesium sulfate in treating acute asthma in children: a systematic review and meta-analysis. BMJ Paediatr Open. 2024-May-23;8...
**Zhang et al., 2012** | Cochrane Database Syst Rev | Meta Analysis Zhang Jing, Yang Jie, ... Liu Ming. Calcium antagonists for acute ischemic stroke. Cochrane Database Syst Rev. 2012-May-16(5):CD001928. doi:10.1002/14651858.CD001928.pub2 BACKGROUND:...
**Tai et al., 2015** | BMJ | Meta Analysis Tai Vicky, Leung William, ... Bolland Mark J. Calcium intake and bone mineral density: systematic review and meta-analysis. BMJ. 2015-Sep-29;351:h4183. doi:10.1136/bmj.h4183 OBJECTIVE: To determine whether i...
**Liu et al., 2020** | Front Biosci (Elite Ed) | Meta Analysis Liu Shurong, Zheng Xue, ... Sun Kai. Predictive value of coronary artery calcium score in cardiovascular disease. Front Biosci (Elite Ed). 2020-Jan-01;12(1):113-125 We investigated corona...
**Korhonen et al., 2022** | Ann N Y Acad Sci | Meta Analysis Korhonen Päivi, Tihtonen Kati, ... Tammela Outi. Calcium supplementation during pregnancy and long-term offspring outcome: a systematic literature review and meta-analysis. Ann N Y Acad Sci...
**Reddin et al., 2023** | Eur J Nutr | Meta Analysis Reddin Catriona, Ferguson John, ... O'Donnell Martin J. Global mean potassium intake: a systematic review and Bayesian meta-analysis. Eur J Nutr. 2023-Aug;62(5):2027-2037. doi:10.1007/s00394-023-03...
**Kim et al., 2025** | Nutrients | Meta Analysis Kim Youngyo, Je Youjin. Intake or Blood Levels of Magnesium and Risk of Metabolic Syndrome: A Meta-Analysis of Observational Studies. Nutrients. 2025-May-14;17(10). doi:10.3390/nu17101667 BACKGROUND/OB...
To date, there has been inconclusive evidence regarding the effect of magnesium supplements on blood pressure (BP). This meta-analysis was conducted to assess the effect of magnesium supplementation on BP and to establish the characteristics of trial...
**Dibaba et al., 2014** | Eur J Clin Nutr | Meta Analysis Dibaba D T, Xun P, He K. Dietary magnesium intake is inversely associated with serum C-reactive protein levels: meta-analysis and systematic review. Eur J Clin Nutr. 2014-Apr;68(4):510-6. doi:...
Background: To our knowledge, the effect of magnesium supplementation on blood pressure (BP) in individuals with preclinical or noncommunicable diseases has not been previously investigated in a meta-analysis, and the findings from randomized control...
**Rirash et al., 2017** | Cochrane Database Syst Rev | Meta Analysis Rirash Fadumo, Tingey Paul C, ... Pope Janet. Calcium channel blockers for primary and secondary Raynaud's phenomenon. Cochrane Database Syst Rev. 2017-Dec-13;12(12):CD000467. doi:1...
IMPORTANCE: Because of the aging population, osteoporotic fractures are an increasingly important cause of morbidity and mortality in the United States. Approximately 2 million osteoporotic fractures occurred in the United States in 2005, and annual ...
**Zhang et al., 2019** | Cochrane Database Syst Rev | Meta Analysis Zhang Jing, Liu Jia, ... Liu Ming. Calcium antagonists for acute ischemic stroke. Cochrane Database Syst Rev. 2019-Feb-13;2(2):CD001928. doi:10.1002/14651858.CD001928.pub3 BACKGROUND...
BACKGROUND: To exploring the role of vitamin D or calcium supplementation in reducing all-cause mortality and cardiovascular outcomes. METHODS: The search was restricted to systematic reviews or meta-analyses published from January 1, 2010, to July 7...
**Wang et al., 2022** | J Clin Neurosci | Meta Analysis Wang Jiaxin, Li Wei, ... Cao Lei. Association between serum calcium and hemorrhagic transformation in ischemic stroke: A systematic review and meta-analysis. J Clin Neurosci. 2022-Oct;104:107-11...
BACKGROUND: Although calcium is one the simplest and least expensive strategies for preventing osteoporotic fractures calcium supplementation is nevertheless not without controversy (Kanis 1989; Nordin 1990). The Food and Drug Administration in the U...
BACKGROUND: Several dietary factors have been considered to be involved in the increasing incidence of colorectal cancer in industrialised countries. Experimental and epidemiological evidence has been suggestive but not conclusive for a protective ro...
BACKGROUND: Although calcium is one the simplest and least expensive strategies for preventing osteoporotic fractures calcium supplementation is nevertheless not without controversy (Kanis 1989; Nordin 1990). The Food and Drug Administration in the U...
BACKGROUND: Several dietary factors have been considered to be involved in the increasing incidence of colorectal cancer in industrialised countries. Experimental and epidemiological evidence has been suggestive but not conclusive for a protective ro...
Showing top 50 of 849 sources, sorted by quality score.
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Frequently Asked Questions
What are electrolytes and why are they important?
Electrolytes are essential minerals, including calcium, magnesium, sodium, and potassium, that are necessary for maintaining vital physiological functions. They play a key role in everything from cardiovascular stability to pregnancy health.
Can calcium supplements help during pregnancy?
Yes, there is strong evidence that calcium supplementation is effective in preventing pre-eclampsia and related hypertensive disorders during pregnancy. Additionally, increased calcium intake is recommended to improve both maternal and infant health outcomes.
Do electrolytes help prevent muscle cramps?
There is currently insufficient evidence to confirm that magnesium is effective for treating skeletal muscle cramps. Current meta-analyses have not definitively established this benefit.
Are electrolytes effective for preventing bone fractures?
The evidence regarding the ability of calcium and vitamin D supplementation to prevent fractures in older adults remains weak and inconclusive. Research has not yet reached a definitive conclusion on this use.
How does sodium intake affect stroke risk?
There is moderate evidence that high sodium intake is associated with an increased risk of stroke. Managing sodium levels is a critical component of cardiovascular health.
Are there any safety concerns or risks with electrolyte supplements?
High sodium intake is a known risk factor for stroke, so monitoring intake is important. Additionally, for patients with chronic kidney disease, managing magnesium and phosphate levels is a critical component of clinical care.
Are there any known drug interactions with electrolytes?
There are currently no documented drug interactions for electrolytes in the reviewed research. However, you should always consult a healthcare professional before starting new supplements.
What is the recommended dose for electrolytes?
Specific effective dose ranges for electrolyte supplementation were not provided in the reviewed research. You should consult a medical professional to determine the appropriate dosage for your specific health needs.
Answers generated from research evidence. Not medical advice.