Related Experiment Video
Updated: Jun 8, 2026

Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing
Published on: May 8, 2021
DASH-style diet and 24-hour urine composition.
Eric N Taylor1, Meir J Stampfer, David B Mount
1Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. entaylor@partners.org
A Dietary Approaches to Stop Hypertension (DASH)-style diet may lower kidney stone risk by increasing urinary citrate and volume. This diet also increases urine potassium, magnesium, and pH, potentially inhibiting stone formation.
Area of Science:
- Nephrology
- Nutritional Science
- Urology
Background:
- Dietary Approaches to Stop Hypertension (DASH)-style diets are associated with reduced kidney stone risk.
- Understanding the impact of DASH-style diets on urinary lithogenic factors is crucial for stone prevention strategies.
Purpose of the Study:
- To examine the associations between a DASH-style diet and 24-hour urinary excretions of lithogenic factors.
- To investigate potential mechanisms by which a DASH-style diet influences kidney stone risk.
Main Methods:
- Analysis of 3426 participants from the Health Professionals Follow-up Study (HPFS) and Nurses' Health Studies (NHS) I and II.
- A DASH score was calculated based on seven dietary components.
- Multivariate analysis of covariance adjusted for relevant covariates.
Main Results:
- Higher DASH scores correlated with increased urinary citrate (11-16%) and volume (16-32%).
- Increased urinary oxalate (4-18%) and calcium (3-12%) were observed with higher DASH scores.
- Higher DASH scores were linked to increased urine potassium, magnesium, phosphate, and pH, and lower relative supersaturations (RSS) for calcium oxalate and uric acid.
Conclusions:
- A DASH-style diet may mitigate kidney stone risk by enhancing urinary citrate and volume.
- The observed associations suggest potential stone inhibitory effects from dairy and plant components of the DASH diet.
More Related Videos
10:17High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry
Published on: April 23, 2019
10:38Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies
Published on: January 16, 2019
Related Concept Videos
Urine Studies I: Urinalysis
Urine Studies II: Urine Culture and Sensitivity Test
Urine: Physical and Chemical Properties
The concentration of these solutes varies, with urea being the most abundant nitrogenous waste product. Other solutes include sodium, chloride, potassium, phosphate,...
Formation of Dilute Urine
Filtrate Osmolarity in the PCT
Initially, as the filtrate passes through the proximal convoluted tubule (PCT), its...
Serum Studies: Renal Function Tests
Physiology of the Genitourinary System III: Urine Concentration and Dilution