Ontario Health Study

What Ontario Health Study does

The Ontario Health Study (OHS) is a non-profit, longitudinal population health research platform established in 2009 and administered under the governance of the Ontario Institute for Cancer Research (OICR). Headquartered at the MaRS Centre in Toronto, the platform has enrolled approximately 225,000 volunteer Ontario residents since launching online in 2010, tracking their health over their lifetimes. Participants contribute data through online questionnaires covering demographics, lifestyle, mental health, medication use, environmental exposures, and personal/family health history; biosamples (40,000+ non-fasting blood samples, urine samples, and DNA) collected primarily through a partnership with LifeLabs across 120+ Ontario locations; physical measurements and spirometry at multiple assessment centres; and MRI imaging via the CAHHM substudy. Genotyping data is available for over 4,430 assessment centre participants.

The underlying technology stack combines a longitudinal participant data platform with linked provincial administrative health data, an integrated biobank, and a formal researcher data-access process administered through a Data Access Committee. The platform functions as the largest contributor to CanPath (Canadian Partnership for Tomorrow's Health), the national 330,000-participant cohort harmonizing data across Canadian regional studies, and in November 2025 joined the Ontario Biobanks network to extend biosample access through provincial biobanking infrastructure.

OHS does not generate commercial revenue. Its operating model is grant-funded, with disclosed support from OICR, the Canadian Institutes of Health Research (CIHR), the Public Health Agency of Canada (PHAC), the Canadian Partnership Against Cancer, and the COVID-19 Immunity Task Force. Its end-users are academic and clinical researchers who apply for de-identified data access (e.g., Dr. Victoria Kirsh for breast cancer screening disparities; Dr. Maneesh Sud for cardiovascular risk; Dr. Michelle Harwood for healthy aging; Dr. David Soave for the international PSY-CA depression-anxiety-cancer project), plus partner institutions such as Sunnybrook Health Sciences Centre, Wilfrid Laurier University, and the University of Toronto's Dalla Lana School of Public Health. The study is no longer recruiting new volunteers but continues to engage existing participants through follow-up questionnaires.

Name

Ontario Health Study

Legal name

Ontario Health Study

Website

https://ontariohealthstudy.ca

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

The Ontario Health Study (OHS) is a non-profit, OICR-administered longitudinal population health research platform tracking 225,000+ Ontario volunteers across 17 years, providing de-identified questionnaire, biobank, MRI, and administrative-health-data access to academic and clinical researchers across Canada via CanPath.

Ownership category

akta.pro rank

Product category

Population Health Research

NAICS

Research and Development in Biotechnology (except Nanobiotechnology) (541714)

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Data Linkage, Registries & Longitudinal Cohort Surveillance (HLAJANAM)

akta.pro secondary industries

Health Data, Vital Statistics & Population Health Informatics (BPAIAJAM), Health Information Exchange & Public Health Data Integration (HLAJAJAD), Healthcare Utilization, Claims & Administrative Data Analytics (HLAJAJAK), Real-World Data (RWD) / Real-World Evidence (RWE) & Observational Research Platforms (HLACAOAM)

Keywords

• Population health research
• Longitudinal health studies
• Biobank data collection
• Epidemiological research platform
• Chronic disease research

Headquarters

HQ city

Toronto

HQ country

Canada

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Research Funding and Grants: The Ontario Health Study is funded through government grants and institutional partnerships. Primary funding sources include the Ontario Institute for Cancer Research (OICR), Canadian Partnership Against Cancer, Public Health Agency of Canada, and research grants from Canadian Institutes of Health Research (CIHR). The study does not generate commercial revenue.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels8 records

Core offering

Ontario Health Study operates a long-term population health research platform and biobank that recruits Ontario residents to contribute personal health data, biosamples (blood, urine, DNA), physical measurements, and questionnaire responses over their lifetimes. The platform makes de-identified epidemiological, clinical, and biological datasets available to approved academic and clinical researchers for studying how lifestyle, environment, and genetics contribute to cancer and chronic disease. With 225,000+ participants tracked over 17 years, OHS is one of Canada's largest cohort studies and the largest contributor to the national CanPath research platform.

Product overview

The Ontario Health Study (OHS) is a population-based health research platform and biobank that has been tracking the health of over 225,000 volunteer participants across Ontario since 2010. The platform operates as a unified research infrastructure consisting of: (1) online health questionnaires covering lifestyle, environment, genetics, and health histories; (2) a biospecimen collection program including blood samples, urine samples, and physical measurements; (3) MRI data from substudies; and (4) a researcher data access platform enabling approved scientists to access de-identified epidemiological and biological datasets. OHS data is contributed to CanPath (Canadian Partnership for Tomorrow's Health), Canada's largest population health cohort with over 330,000 participants.

Differentiator

Problem solved

Functional benefit

Brands

• HEAL Study: Health and Environmental Longitudinal Study - a sub-study within the Ontario Health Study platform
• CanPath

Products and services

• Online Health Questionnaires Online questionnaires completed by volunteer participants covering social and economic demographics, personal and family health histories, sleep patterns, medication use, alcohol and tobacco use, cannabis and e-cigarette use, physical activity, mental health, and environmental exposures. Designed for Ontario residents contributing personal health information to long-term research.
• Blood Collection Program Non-fasting blood sample collection program from OHS participants at LifeLabs medical laboratory locations, with samples processed and stored in the OHS biobank for future research on cancer and chronic disease biomarkers. Available to enrolled Ontario participants across 120+ LifeLabs facilities.
• Urine Sample Collection Urine sample collection from OHS participants for biomarker analysis and health research purposes. Part of the integrated biospecimen collection program supporting chronic disease and cancer research.
• Physical Measurements (Assessment Centre) In-person physical measurement collection including spirometry, blood pressure, heart rate, body composition, and other clinical assessments collected at OHS assessment centres. Available to a subset of participants at the Toronto Assessment Centre and additional sites.
• Researcher Data Access Platform Formal platform enabling approved academic and clinical researchers to access de-identified epidemiological, clinical, and biological datasets linked to provincial administrative health data for approved research projects. Researchers apply through the Data Access Committee review process.
• MRI Data Collection (CAHHM Substudy)

Named customers6 records

Segments1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability1 record

Feature4 records

Partnerships

Eight partnerships are on record, tiered major and core.

• Ontario BiobanksmajorStrategic or Co-development Partner · 1 January 2025OHS joined Ontario Biobanks network in November 2025, connecting OHS biosamples with provincial biobanking infrastructure to expand research access to biological samples.
• COVID-19 Immunity Task Force (CITF)majorStrategic or Co-development Partner · 1 January 2020CanPath (including OHS) collaborated with CITF to conduct pan-Canadian COVID-19 seroprevalence studies using blood samples from over 100,000 Canadians.
• LifeLabs Medical Laboratory ServicescoreStrategic or Co-development Partner · 1 January 2012LifeLabs partnership enables blood sample collection at over 120 facilities across Ontario for the OHS Biobank. LifeLabs collects, processes, and transports blood samples according to specific protocols required for research quality specimens.
• CanPath (Canadian Partnership for Tomorrow's Health)coreStrategic or Co-development PartnerOHS is the largest contributor to CanPath, Canada's largest population health cohort with over 330,000 volunteer participants. CanPath harmonizes data from OHS and other regional cohorts to create the largest health research platform in Canadian history. Dr. Philip Awadalla serves as National Scientific Director for CanPath while also leading the OHS.
• Ontario Institute for Cancer Research (OICR)coreStrategic or Co-development PartnerOICR administers the Ontario Health Study and governs the study website, data infrastructure, and privacy policies. The OHS website is governed by OICR's Terms and Conditions.
• University of Toronto Dalla Lana School of Public HealthcoreStrategic or Co-development PartnerCanPath is hosted by the University of Toronto's Dalla Lana School of Public Health. Multiple OHS researchers and leadership including Dr. Philip Awadalla hold professorial positions at the school.
• Sunnybrook Health Sciences CentremajorStrategic or Co-development PartnerDr. Maneesh Sud of Sunnybrook led major cardiovascular disease research using data from 175,000+ OHS participants, presented at American College of Cardiology 2025.
• Global Biobank Meta-analysis Initiative (GBMI)majorStrategic or Co-development PartnerOHS provided genotyping data from 7,300 consenting participants to GBMI, the only Canadian study included in this international research initiative studying disease biology and characteristics.

Scale indicators14 records

Recent moves9 records

Expansion highlights5 records

Emerging players

• FinnGen: FinnGen is a public-private Finnish genomics project combining biobank samples with national health record data to study disease genetics at population scale. Comparable in combining biobanking, genomics, and administrative health record linkage.
• deCODE genetics: deCODE genetics built a population-scale genomics platform leveraging Iceland's genealogical records and is now part of Amgen. It is comparable in coupling large-scale genotyping with population health data, though operating commercially rather than as a non-profit cohort.

Direct peers

• Nurses' Health Study: The Nurses' Health Study is one of the longest-running U.S. prospective cohorts investigating lifestyle, environmental, and genetic risk factors for chronic disease in women. Comparable to OHS in longitudinal questionnaire design and chronic disease research focus.
• Canadian Partnership for Tomorrow's Health (CanPath): CanPath is the national harmonized population health research platform of which OHS is the largest regional contributor. Both share scientific leadership (Dr. Philip Awadalla is National Scientific Director) and offer longitudinal health data and biosamples to researchers across Canada.
• Generation Scotland: Generation Scotland is a Scottish family-based population cohort with ~24,000 participants and biobanking, focused on genetic and environmental determinants of disease. It is highly comparable as a regional/national longitudinal cohort study with biobank and data linkage to health records.

Broad incumbents

• Framingham Heart Study: The Framingham Heart Study is the foundational longitudinal cardiovascular cohort, tracking multiple generations of participants since 1948. It is comparable as a long-running prospective cohort investigating lifestyle, environment, and genetics in chronic disease.
• UK Biobank: UK Biobank is the world's most prominent population-scale prospective cohort, with deep phenotypic, genomic, and linked health record data on 500,000+ participants. It is the international benchmark that defines the category OHS operates in, making it the most cited comparison for scale, depth, and access model.
• All of Us Research Program: The NIH All of Us Research Program is a U.S. federal longitudinal cohort with 1M+ participants collecting surveys, biospecimens, EHR data, and genomics. It is comparable in mission (population health discovery), data linkage architecture, and reliance on government/grant funding, though at significantly larger scale.
• EPIC (European Prospective Investigation into Cancer and Nutrition): EPIC is a multi-country European prospective cohort with 500,000+ participants designed to investigate diet, lifestyle, environmental and genetic factors in cancer and chronic disease. Comparable to OHS in cohort methodology and chronic disease focus, but with broader geographic footprint.

Regional players

• China Kadoorie Biobank: The China Kadoorie Biobank is a large-scale Chinese population cohort with 500,000+ participants and long-term follow-up linked to health records. It is comparable as a government-funded prospective cohort with biobanking and disease outcome tracking, though focused on a different national population.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xfacebook.com/OntarioHealthStudy/?ref=sgm
• YouTubeyoutube.com/user/OntarioHealthStudy
• LinkedInlinkedin.com/company/ontario-health-study

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Ontario Health Study