{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Soy+isoflavones&page=2",
    "query": {
      "intervention": "Soy isoflavones",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 75,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Soy+isoflavones&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Soy+isoflavones&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T20:52:46.216Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT03868631",
      "title": "Muscle Growth Following a Resistance Training Program in Men and Women Consuming Protein Supplements",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Skeletal Muscle Growth"
      ],
      "interventions": [
        {
          "name": "Whey protein supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Soy protein supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Point Loma Nazarene University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 61,
      "start_date": "2016-08-15",
      "completion_date": "2017-04-30",
      "has_results": true,
      "last_update_posted_date": "2020-02-27",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03868631"
    },
    {
      "nct_id": "NCT00665860",
      "title": "Safety and Effectiveness of Soy Phytoestrogens to Prevent Bone Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Soy isoflavones",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 60 Years · Female only"
      },
      "enrollment_count": 403,
      "start_date": "2001-04",
      "completion_date": "2006-06",
      "has_results": false,
      "last_update_posted_date": "2020-11-27",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 3,
      "location_summary": "Davis, California • Athens, Georgia • Houston, Texas",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        },
        {
          "city": "Athens",
          "state": "Georgia"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00665860"
    },
    {
      "nct_id": "NCT01985763",
      "title": "Genistein in Treatment of Metastatic Colorectal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Colon Cancer",
        "Rectal Cancer",
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Genistein",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sofya Pintova",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2013-11",
      "completion_date": "2018-10-31",
      "has_results": true,
      "last_update_posted_date": "2019-05-10",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01985763"
    },
    {
      "nct_id": "NCT00942513",
      "title": "Effect of Lactose, Fructose, Sucrose, Whey Protein, and Soy Protein on Substrate Absorption and Oxidation: a Pilot Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substrate Absorption",
        "Substrate Oxidation",
        "Glucose Regulation"
      ],
      "interventions": [
        {
          "name": "trt 1",
          "type": "OTHER"
        },
        {
          "name": "trt 2",
          "type": "OTHER"
        },
        {
          "name": "trt 3",
          "type": "OTHER"
        },
        {
          "name": "trt 4",
          "type": "OTHER"
        },
        {
          "name": "trt 5",
          "type": "OTHER"
        },
        {
          "name": "trt 6",
          "type": "OTHER"
        },
        {
          "name": "trt 7",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "United States Department of Agriculture (USDA)",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "25 Years to 65 Years · Male only"
      },
      "enrollment_count": 9,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2011-02-09",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "Beltsville, Maryland",
      "locations": [
        {
          "city": "Beltsville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00942513"
    },
    {
      "nct_id": "NCT00099008",
      "title": "Genistein in Preventing Breast or Endometrial Cancer in Healthy Postmenopausal Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Cancer",
        "Endometrial Cancer"
      ],
      "interventions": [
        {
          "name": "Genistein",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 70 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2004-03",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2013-05-21",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00099008"
    },
    {
      "nct_id": "NCT00255125",
      "title": "Role of Soy Supplementation in Prostate Cancer Development",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Prostate Neoplasm"
      ],
      "interventions": [
        {
          "name": "Soy Supplement",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 86,
      "start_date": "2005-09",
      "completion_date": "2009-10",
      "has_results": true,
      "last_update_posted_date": "2019-06-18",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00255125"
    },
    {
      "nct_id": "NCT00594620",
      "title": "Soy Derivatives for Control of Hot Flashes in Men on Androgen Deprivation Therapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Flav-ein capsules",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 11,
      "start_date": "2004-08",
      "completion_date": "2010-04",
      "has_results": true,
      "last_update_posted_date": "2022-02-14",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00594620"
    },
    {
      "nct_id": "NCT00340665",
      "title": "Study of Infant Diets on Estrogen Activity and Development",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Infant Formula",
        "Estrogen Activity"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Environmental Health Sciences (NIEHS)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "1 Year",
        "sex": "ALL",
        "summary": "Up to 1 Year"
      },
      "enrollment_count": 239,
      "start_date": "2003-05-05",
      "completion_date": "2012-08-22",
      "has_results": false,
      "last_update_posted_date": "2019-11-21",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 2,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00340665"
    },
    {
      "nct_id": "NCT02007200",
      "title": "Soy Isoflavones in Preventing Head and Neck Cancer Recurrence in Patients With Stage I-IV Head and Neck Cancer Undergoing Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Hypopharyngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Verrucous Carcinoma",
        "Recurrent Lip and Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Oral Cavity Verrucous Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Stage I Hypopharyngeal Squamous Cell Carcinoma",
        "Stage I Laryngeal Squamous Cell Carcinoma",
        "Stage I Laryngeal Verrucous Carcinoma",
        "Stage I Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage I Oral Cavity Verrucous Carcinoma",
        "Stage I Oropharyngeal Squamous Cell Carcinoma",
        "Stage II Hypopharyngeal Squamous Cell Carcinoma",
        "Stage II Laryngeal Squamous Cell Carcinoma",
        "Stage II Laryngeal Verrucous Carcinoma",
        "Stage II Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage II Oral Cavity Verrucous Carcinoma",
        "Stage II Oropharyngeal Squamous Cell Carcinoma",
        "Stage III Hypopharyngeal Squamous Cell Carcinoma",
        "Stage III Laryngeal Squamous Cell Carcinoma",
        "Stage III Laryngeal Verrucous Carcinoma",
        "Stage III Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage III Oral Cavity Verrucous Carcinoma",
        "Stage III Oropharyngeal Squamous Cell Carcinoma",
        "Stage IV Hypopharyngeal Squamous Cell Carcinoma",
        "Stage IVA Laryngeal Squamous Cell Carcinoma",
        "Stage IVA Laryngeal Verrucous Carcinoma",
        "Stage IVA Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage IVA Oral Cavity Verrucous Carcinoma",
        "Stage IVA Oropharyngeal Squamous Cell Carcinoma",
        "Tongue Carcinoma"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Soy Isoflavones",
          "type": "DRUG"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "19 Years to 79 Years"
      },
      "enrollment_count": 55,
      "start_date": "2009-07",
      "completion_date": "2015-09",
      "has_results": true,
      "last_update_posted_date": "2016-10-24",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Ann Arbor, Michigan • Detroit, Michigan",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02007200"
    },
    {
      "nct_id": "NCT00499408",
      "title": "Vitamin D and Soy Supplements in Treating Patients With Recurrent Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "soy",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "MALE",
        "summary": "18 Years to 120 Years · Male only"
      },
      "enrollment_count": 26,
      "start_date": "2007-04",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2018-11-21",
      "last_synced_at": "2026-09-30T20:52:46.216Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00499408"
    }
  ]
}