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Home > "M" Clinical Trials Conditions > Macrobiotic Diet and Flax Seed: Effects on Estrogens, Phytoestrogens, & Fibrinolytic Factors  Macrobiotic Diet and Flax Seed: Effects on Estrogens, Phytoestrogens, & Fibrinolytic Factors
Macrobiotic Diet and Flax Seed: Effects on Estrogens, Phytoestrogens, & Fibrinolytic Factors
For Condition: Endometrial Cancer,Cardiovascular Diseases,Breast Cancer,Osteoporosis
Status: Recruiting
Sponsor(s): National Center for Complementary and Alternative Medicine (NCCAM) ,
Synopsis: This study will assess whether alternative, high phytoestrogen dietary interventions result in favorable effects on biological parameters that have been associated with hormone-dependent cancers, cardiovascular disease, and osteoporosis.
Details: Broad health effects of endogenous and exogenous estrogens on diseases of aging, including hormone-dependent cancers, cardiovascular disease, and osteoporosis, are generally recognized. For example, estrogen replacement therapy (ERT) may increase the risk of subsequent breast and endometrial cancer, but also decreases the risk of coronary disease and fractures. Because of the increased cancer risk, many women seek out alternatives to ERT. Phytoestrogens, plant compounds that have estrogenic effects, have been a focus of interest as an alternative to ERT. The isoflavones and lignans are two major classes of phytoestrogens that occur in the food supply. Among the former, soy foods have attracted much interest, while among the latter, whole grains and seeds are sources in a typical diet. More specifically, women consuming a macrobiotic diet have been observed to have extremely high levels of phytoestrogen metabolites in their urine, perhaps 10 to 20 times that seen in women consuming an omnivorous diet. Proponents of a macrobiotic diet have proposed that it is beneficial in the context of cancer therapy, as well as for the prevention and treatment of cardiovascular disease. This study will investigate, in a randomized, three-arm study, the effects of two interventions that are high in phytoestrogens on various parameters related to estrogen metabolism and fibrinolysis. Approximately 120 women will be randomized to receive an American Heart Association (AHA) Step 1 diet, an AHA Step 2 diet + 10 g/day flax seed, or a macrobiotic dietary intervention. Blood and urine samples will be drawn at baseline, and at three, six, nine, and twelve months, to examine both short and long-term effects of these interventions. Outcomes include blood and urine levels of total estrogens and estradiol, and related metabolites; antigens to plasminogen activator inhibitor-1 (PAI-1) and tissue plasminogen activator (t-PA), fibrin D-dimer, and von Willebrand Factor; and endothelial function as measured by high-resolution ultrasound. Blood levels of antioxidant vitamins and retinoids will also be examined. This study should provide information on whether these alternative, high phytoestrogen dietary interventions result in favorable effects on these biological parameters that are related to risk of major diseases of aging.
Eligibility:
Study Type: Interventional, Treatment, Randomized
Minimum Age/Maximum Age: 50 Years/72 Years
Genders: Female
Protocol Entry Criteria: Inclusion Criteria: THIS TRIAL IS RECRUITING IN THE NEW YORK METRO AREA ONLY - Postmenopausal - Weight within 90% to 120% of ideal body weight
Total Enrollment:
Location and Contact Information:
Overall Study Official:
Dr.Kushi, Principal Investigator, Columbia University, Teachers College
Columbia University *Recruiting*
New York City, New York,
United States
Recruiting
Additional Information:
Study ID Numbers: 1 P50 AT00090-01P1; 1 P50 AT00090-01
Study Start Date:
Record last reviewed: January 2003
Additional information available at: clinicaltrials.gov
Clinicaltrials.gov Reference link: NCT00010829
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Macrobiotic Diet and Flax Seed: Effects on Estrogens, Phytoestrogens, & Fibrinolytic Factors
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