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Adolescent Health

Study shows black girls retain more sodium when calcium intake is low

Published in Women's Health Weekly, October 16th, 2003

Research presented at the American Heart Association's 57th Annual High Blood Pressure Research Conference, September 23-26, 2003, shows that black girls retain more sodium if calcium intake is low than white girls do.

Researchers measured sodium (Na) excretion in 40 black and 28 white adolescent girls 11-15 years old. The study was divided into two sessions of 3 weeks each. The girls ate diets with either 1.3 grams per day (g/d) or 4 g/d of dietary sodium, plus dietary calcium in one of three levels: 800 milligrams per day (mg/d), 1300 mg/d, or 1800 mg/d. Researchers measured daily urinary and fecal sodium levels.

While consuming the low-calcium,...

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