Magnesium retention from metabolic-balance studies in female adolescents: impact of race, dietary salt, and calcium.

ABSTRACT:

Background

Previously, we showed that black girls retained more calcium than white girls did and that salt loading negatively affected calcium retention. Racial differences likely exist in other bone minerals also, such as magnesium, in response to salt loading during growth.

Objective

We studied racial differences in magnesium metabolism in response to dietary sodium and calcium during rapid bone growth.

Design

Twenty-seven white and 40 black girls (11-15 y old) were studied for 3 wk while they consumed low-sodium (1.3 g/d) and high-sodium (3.8 g/d) diets by using a randomized-order, crossover metabolic study with 3 dietary calcium intakes; the magnesium dietary intake was fixed at 230 mg/d. Urine and feces were collected during each 3-wk period in 24-h pools and ana

SUBMITTER: Palacios C 

PROVIDER: S-EPMC3628374 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature