Evidence mapPaperPMID 41408372Full record

ArticleJournal of health, population, and nutrition2025

Counting the invisible: dietary inorganic phosphorus intake across different chronic kidney disease stages in elderly patients-a national insight.

Amin Roshdy Soliman, Reham Abdelghany, Tarek Samy Abdelaziz, Abeer Attia, Rabab Mahmoud Ahmed

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Article in Journal of health, population, and nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 citing paper in PubMed.

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5 · Who and what money

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5 authors.

Amin Roshdy SolimanInternal medicine and Nephrology- Kasr Alainy Faculty of medicine- Cairo University, Cairo, Egypt. aminroshdy@kasralainy.edu.eg.ORCID 0000-0002-5589-1037
Reham AbdelghanyInternal medicine and Nephrology- Kasr Alainy Faculty of medicine- Cairo University, Cairo, Egypt.ORCID 0000-0002-1945-9925
Tarek Samy AbdelazizInternal medicine and Nephrology- Kasr Alainy Faculty of medicine- Cairo University, Cairo, Egypt.ORCID 0000-0002-1238-1045
Abeer AttiaDepartment of public health and Community medicine- Kasr Alainy Faculty of medicine, Cairo University, Cairo, Egypt.ORCID 0000-0001-6558-392X
Rabab Mahmoud AhmedInternal medicine and Nephrology- Kasr Alainy Faculty of medicine- Cairo University, Cairo, Egypt.ORCID 0000-0002-9914-7066

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere's still a gap in research on phosphorus intake for elderly patients with chronic kidney disease. Processed and ultra-processed foods provide convenient dietary options but are significant source of harmful inorganic phosphorus. This study attempts to evaluate total phosphorus intake in elderly chronic kidney disease (CKD) patients across different stages, focusing on dietary contribution of inorganic phosphorus, stratified into tertiles, from processed and ultra-processed foods.

methodsCross-sectional analytical study conducted using an adapted food frequency questionnaire to assess weekly consumption phosphorus patterns over the last year among 232 participants. The study investigates the frequency and types of natural high-phosphorus foods, as well as processed and ultra-processed foods commonly available in the Egyptian market. It focused on elderly chronic kidney disease patients aged over 65 years, covering various stages of chronic kidney disease, including those receiving haemodialysis, and compared their dietary intake to their caregivers and an age-matched group of individuals over 65 years without CKD.

resultsPhosphorus intake among elderly CKD subgroups showed considerable inter-individuals difference, ranging 880 - 16,804 mg/week. The total median weekly phosphorus intake in CKD patients > 65 years was lower compared to caregivers, with a statistically significant difference (p = 0.011) for patients aged 65-74 years. Phosphorus intake declined as CKD progressed from stage II to V. Among CKD, patients with a diploma education& who cook for themselves were significantly more likely to exceed the Dietary Reference Intake, (p < 0.05).Weekly inorganic phosphorous intake showed significant proportionate with frailty score (p = 0.024). Phosphorus intake from processed food/UPF was categorized into tertiles (low (< 694.39 mg), moderate (694.39-2382.53 mg), and high (> 2382.53 mg). 41% CKD patients > 75 years were classified as low inorganic phosphorus consumers compared to 33.3% in CKD aged 65-74 years. Education level, BMI showed a significant association, p < 0.05. Patients undergoing three dialysis sessions per week consumed more than twice the inorganic phosphorus (1,314.9 mg) compared to those receiving two sessions (552.1 mg), (p > 0.05). CKD patients > 75 years had significantly lower consumption of nuts, legumes, and beans than caregivers (p = 0.048).

conclusionAge, CKD diagnosis and stage may be additional factors in the observed variations in phosphorus-containing food intake patterns.

Indexed as

DietPhosphorus, DietaryRenal Insufficiency, ChronicAgedAged, 80 and overCross-Sectional StudiesEgyptFast FoodsFemaleHumansMaleRenal DialysisSurveys and QuestionnairesPhosphorus, DietaryChronic kidney diseaseDietary patternsElderly patientsInorganic phosphorusProcessed food

Identifiers

PMID41408372
PMCPMC12821956

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