Trial reportEuropean journal of nutrition2020
Soy isoflavones interact with calcium and contribute to blood pressure homeostasis in women: a randomized, double-blind, placebo controlled trial.
Trial report in European journal of nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00204490 (Mammographic Density and Soy Isoflavones), which is not on this map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Mammographic Density and Soy Isoflavones
Who cites it
6 citing papers in PubMed, 18 citations in OpenAlex.
- Soy isoflavones decrease fibroglandular breast tissue measured by magnetic resonance imaging in premenopausal women: A 2-year randomized double-blind placebo controlled clinical trial.Clinical nutrition ESPEN · 2022Trial
- Phenolic-derived compounds in osteoporosis-Mechanisms, clinical evidence, and drug delivery: A review.Biomolecules & biomedicine · 2025Review
- Impact of thermal processing on polyphenols, carotenoids, glucosinolates, and ascorbic acid in fruit and vegetables and their cardiovascular benefits.Comprehensive reviews in food science and food safety · 2024Review
- Targeting Breast Cancer Stem Cells Using Naturally Occurring Phytoestrogens.International journal of molecular sciences · 2022Review
- Current Perspectives on the Beneficial Effects of Soybean Isoflavones and Their Metabolites for Humans.Antioxidants (Basel, Switzerland) · 2021Review
- Production of Bovine Equol-Enriched Milk: A Review.Animals : an open access journal from MDPI · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundEstrogens and calcium regulate vascular health but caused adverse cardiovascular events in randomized trials.
objectivesWhether phytoestrogenic soy isoflavones modulate the physiological effects of calcium on blood pressure was explored.
designA double-blind, randomized study assigned 99 premenopausal women to 136.6 mg isoflavones (as aglycone equivalents) and 98 to placebo for 5 days per week for up to 2 years. Blood pressure, serum calcium and urinary excretion of daidzein (DE) and genistein (GE) were measured repeatedly before and during treatment.
resultsIsoflavones did not affect blood pressure per intake dose assignment (i.e. intention-to-treat, n = 197), but significantly affected blood pressure per measured urinary excretion of isoflavones (i.e. per protocol analysis, n = 166). Isoflavones inversely moderated calcium effects on systolic blood pressure (SBP) (interaction term β-estimates: - 3.1 for DE, - 12.86 for GE, all P < 0.05), and decreased diastolic blood pressure (DBP) (β-estimates: - 0.84 for DE, - 2.82 for GE, all P < 0.05) after controlling for calcium. The net intervention effects between the maximum and no isoflavone excretion were - 17.7 and + 13.8 mmHg changes of SBP, respectively, at serum calcium of 10.61 and 8.0 mg/dL, and about 2.6 mmHg decrease of DBP.
conclusionsModeration by isoflavones of the physiological effect of calcium tends to normalize SBP, and this effect is most significant when calcium concentrations are at the upper and lower limits of the physiological norm. Isoflavones decrease DBP independent of calcium levels. Further studies are needed to assess the impact of this novel micronutrient effect on blood pressure homeostasis and cardiovascular health.
trial registrationwww.clinicaltrials.gov identifier: NCT00204490.
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Registered trials
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