Protein and weight loss: what happens to your bones?
NCT ID NCT00473031
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how different amounts of protein in the diet affect bone health when overweight or obese postmenopausal women lose weight. Researchers measured changes in bone density and quality, as well as diet quality. The goal was to learn, not to treat or cure any disease.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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60 people
The number who actually took part.
- Start date
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Mar 2007
- Finished
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Jun 2010
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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50 to 70 years
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Postmenopausal women who are more than 2 years since last menses * Obese or overweight * Must live in the geographic vicinity of Rutgers University Exclusion Criteria: * Currently on any medication known to influence calcium or bone metabolism, including HRT, or with evidence of diseases known to influence calcium metabolism (i.e. metabolic bone disease, hyperparathyroidism, untreated thyroid disease, significant immune, hepatic, or renal disease, significant cardiac disease \[i.e., heart attack or stroke in the past 6 months., abnormal EKG\], active malignancy or cancer therapy within the past year) * History of kidney stones * Weight gain or weight loss (5% of body wt) within 3 months prior to recruitment * Participation in other investigational studies during the 12-month study period * Usually have a very high or low intake of calcium (more than 1500 or less than 500 mg per day)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Rutgers University
New Brunswick, New Jersey, 08901, United States
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