# Eggshell Calcium Vitamin D Bone Mineral Density Randomized Trial: What the Evidence Says Canonical: https://www.migaku.app/guides/eggshell-calcium-vitamin-d-bone-mineral-density-randomized-trial-evidence-review Category: evidence-review Summary: Eggshell Calcium Vitamin D Bone Mineral Density Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sourc Last reviewed: 2026-05-28 Reviewed by: Migaku Evidence Review # Eggshell Calcium Vitamin D Bone Mineral Density Randomized Trial: What the Evidence Says ## Quick Answer Eggshell Calcium Vitamin D Bone Mineral Density Randomized Trial has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are randomized trial, so conclusions should be framed as evidence-aware guidance rather than medical advice. ## Key Takeaways - This page is generated only from sources stored in the Migaku evidence knowledge base. - Current evidence mix: 1 randomized trial, 1 preclinical study. - Claims should be interpreted with the source type, study design, population, and publication date in mind. - This article is educational and does not replace care from a qualified clinician. ## Evidence Map | Source | Evidence type | Level | Date | Identifier | | --- | --- | ---: | --- | --- | | Effects of Eggshell Calcium- and Vitamin D-Fortified HMR Combined with Aerobic Exercise on Bone Mineral Density in Postmenopausal Women: A Pilot Randomized Controlled Trial | randomized trial | 2 | 2026-02-12 | 10.3390/nu18040605 | | Effects of fine-to-coarse limestone ratio on performance, egg quality, bone traits, and renal CYP27B1 protein abundance in peak and aged Lohmann Brown laying hens | preclinical study | 4 | 2026-08-01 | 10.1016/j.psj.2026.107047 | ## What The Sources Report - Bone health is a major concern for postmenopausal women, as estrogen deficiency after menopause accelerates bone resorption and suppresses bone formation, leading to reduced bone mineral density (BMD) and an increased risk of fractures. [Jung Susie (2026); evidence level 2] - Among the various risk factors for osteoporosis, modifiable lifestyle factors-particularly insufficient calcium and vitamin D intake, as well as inadequate physical activity-are of special importance, alongside other established factors such as advanced age and low body mass index (BMI). [Jung Susie (2026); evidence level 2] - It was hypothesized that increasing the dietary proportion of CL would promote more stable Ca homeostasis in laying hens, thereby enhancing eggshell and bone quality, with more pronounced effects in older hens due to their reduced Ca absorptive efficiency. [Pagnussatt Heloísa (2026); evidence level 4] - However, the highest proportion of CL (30:70) resulted in a reduced RTW (= 0.050) and lower tibia breaking strength (< 0.001). [Pagnussatt Heloísa (2026); evidence level 4] ## How To Read This Evidence Evidence level 1 generally reflects systematic reviews or meta-analyses. Level 2 includes randomized trials, guidelines, or public-health guidance. Level 3 usually reflects observational or narrative-review evidence. Level 4 is weaker or early-stage evidence. The level is a sorting aid, not a final quality grade. ## Practical Interpretation There is trial evidence in the current set, but population and intervention details still matter. For eggshell calcium vitamin d bone mineral density randomized trial, the next editorial step is to add more targeted sources and separate strong findings from early or indirect evidence. ## Limits Of This First Pass This is a small-batch MVP article. It uses the first ingested sources for this topic and should be expanded with more targeted searches, license review, and human editorial checks before being treated as a definitive review. ## References - Jung Susie (2026). Effects of Eggshell Calcium- and Vitamin D-Fortified HMR Combined with Aerobic Exercise on Bone Mineral Density in Postmenopausal Women: A Pilot Randomized Controlled Trial. DOI: 10.3390/nu18040605. PMCID: PMC12942995. PMID: 41754122. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12942995/ - Pagnussatt Heloísa (2026). Effects of fine-to-coarse limestone ratio on performance, egg quality, bone traits, and renal CYP27B1 protein abundance in peak and aged Lohmann Brown laying hens. DOI: 10.1016/j.psj.2026.107047. PMCID: PMC13196524. PMID: 42127853. License: https://creativecommons.org/licenses/by-nc-nd/4.0/. https://pmc.ncbi.nlm.nih.gov/articles/PMC13196524/ ## Safety Note Health information can change, and individual risk depends on medical history, medications, pregnancy status, age, and diagnosis. Talk with a qualified clinician before changing treatment, supplement, or medication routines.