User profiles for K. O. O'Brien

Kimberly O'Brien

Professor, Cornell Univeristy
Verified email at cornell.edu
Cited by 9500

[HTML][HTML] Dietary protein, calcium metabolism, and skeletal homeostasis revisited

JE Kerstetter, KO O'Brien, KL Insogna - The American journal of clinical …, 2003 - Elsevier
High dietary protein intakes are known to increase urinary calcium excretion and, if maintained,
will result in sustained hypercalciuria. To date, the majority of calcium balance studies in …

[HTML][HTML] Low protein intake: the impact on calcium and bone homeostasis in humans

JE Kerstetter, KO O'Brien, KL Insogna - The Journal of nutrition, 2003 - Elsevier
Increasing dietary protein results in an increase in urinary calcium. Despite over 80 y of
research, the source of the additional urinary calcium remains unclear. Because most calcium …

Pregnancy and iron homeostasis: an update

C Cao, KO O'brien - Nutrition reviews, 2013 - academic.oup.com
It has been nearly 15 years since the first review on pregnancy and iron deficiency was
published in Nutrition Reviews. Many unresolved issues raised in that seminal review have been …

The impact of dietary protein on calcium absorption and kinetic measures of bone turnover in women

JE Kerstetter, KO O'Brien, DM Caseria… - The journal of …, 2005 - academic.oup.com
Although high-protein diets induce hypercalciuria in humans, the source of the additional
urinary calcium remains unclear. One hypothesis is that the high endogenous acid load of a …

Bone markers, calcium metabolism, and calcium kinetics during extended‐duration space flight on the Mir space station

SM Smith, ME Wastney, KO O'Brien… - Journal of Bone and …, 2005 - academic.oup.com
Bone loss is a current limitation for long‐term space exploration. Bone markers, calcitropic
hormones, and calcium kinetics of crew members on space missions of 4–6 months were …

Estrogen suppression in males: metabolic effects

N Mauras, KO O'Brien, KO Klein… - The Journal of Clinical …, 2000 - academic.oup.com
OBrien. A dual filament thermal ionization quadrapole mass spectrometer (Finnigan THQ,
Finnigan MAT, Bremen, Germany) was used to measure the Ca isotopic enrichments (20). …

Hypovitaminosis D among healthy children in the United States: a review of the current evidence

AJ Rovner, KO O'Brien - Archives of pediatrics & adolescent …, 2008 - jamanetwork.com
Objective To review the published literature on serum 25-hydroxyvitamin D concentrations
in US children. Data Sources Articles were identified by searching MEDLINE using25-…

[HTML][HTML] Dietary protein affects intestinal calcium absorption

JE Kerstetter, KO O'Brien, KL Insogna - The American journal of clinical …, 1998 - Elsevier
Background Changes in dietary protein in adults are associated with changes in urinary
calcium excretion. The mechanisms underlying this effect are not completely understood, but …

[HTML][HTML] Prenatal iron supplements impair zinc absorption in pregnant Peruvian women

KO O'Brien, N Zavaleta, LE Caulfield, J Wen… - The Journal of …, 2000 - Elsevier
Prenatal iron supplements may adversely influence zinc absorption during pregnancy. To
examine the impact of prenatal iron supplements on supplemental zinc absorption, fractional …

[HTML][HTML] Hemoglobin concentrations influence birth outcomes in pregnant African-American adolescents

SC Chang, KO O'Brien, FR Witter, MS Nathanson… - The Journal of …, 2003 - Elsevier
Relationships between hemoglobin concentrations and birth outcomes have not been well
characterized in African-American adolescents despite the fact that this group is at a higher …