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Spots Global Cancer Trial Database for Clinical Trial of Vitamin D3 to Reduce Cancer Risk in Postmenopausal Women

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Trial Identification

Brief Title: Clinical Trial of Vitamin D3 to Reduce Cancer Risk in Postmenopausal Women

Official Title: Clinical Trial of Vitamin D3 to Reduce Cancer Risk in Postmenopausal Women

Study ID: NCT01052051

Conditions

Cancer

Study Description

Brief Summary: To determine the effect of increasing serum 25(OH)D from prevailing levels with vitamin D3 supplementation, while maintaining adequate calcium intake, on incidence of all-type cancer in a population sample of healthy postmenopausal women.

Detailed Description: Hypotheses: Primary: Increasing serum 25(OH)D from prevailing levels with vitamin D3 supplementation, while maintaining adequate calcium intake, will significantly decrease incidence of all-type cancer in a population sample of healthy postmenopausal women. Secondary: 1. Increasing serum 25(OH)D from prevailing levels will significantly decrease incidence of specific cancers: breast, lung, colon, myeloma, leukemia, lymphoma. 2. Increasing serum 25OHD from prevailing levels will significantly decrease incidence of other disorders, specifically hypertension, cardiovascular disease, osteoarthritis, colonic adenomas, diabetes, upper respiratory infections and falls. Specific Aims: 1. Determine the effect of supplementation with vitamin D3 on incidence of all types of cancer combined. 2. Determine in a nested-case control study the association of serum 25OHD collected at randomization and at the end of year one of study with risk of cancer over four years. 3. Sample randomly the population of healthy independently-living postmenopausal women 55 years and older from twelve adjacent rural counties in Nebraska. 4. Enroll a random sample of 2300 women into an intervention study, assign them randomly to one of two treatment groups: 1) vitamin D3 (2000 IU/d) and calcium (1500 mg/d), or 2) vitamin D3 placebo and calcium placebo, and to follow each study participant for four years. 5. Collect and store blood serum and white blood cells from every participant to test for genetic markers should the intervention be found effective in decreasing the incidence of cancer. Markers selected will be determined by the state of the science at the time of analysis. 6. Determine the effect of supplementation with calcium and vitamin D3 on incidence of specific cancers: breast, lung, colon, myeloma, leukemia, and lymphoma. 7. Determine the effect of supplementation on incidence of other disorders, specifically hypertension, cardiovascular disease, osteoarthritis, colonic adenomas, diabetes, upper respiratory infections, fractures, and falls.

Keywords

Eligibility

Minimum Age: 55 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: FEMALE

Healthy Volunteers: Yes

Locations

Fremont Area Medical Center, Fremont, Nebraska, United States

Contact Details

Name: Joan M Lappe, PhD

Affiliation: Creighton University

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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