Individualized Homeopathy Longitudinal Cohort Study

Practitioner recruitment is open. Help document long-term health experiences across clinical homeopathy practices.

The IAH Research Office and Practitioner-Generated Research Network (PGRN) are recruiting professional homeopaths and medical or naturopathic practitioners who provide individualized homeopathy care for this ethics-approved, eight-year study. Alastair C. Gray, PhD, is the study director.

Homeopathy practitioner participating in the PGRN longitudinal cohort study reviewing a client case.

Why this research matters

Every practice holds valuable clinical observations. By collecting comparable information from many participating practices over time, researchers can examine trends that are difficult to investigate through individual cases alone.

The study aims to describe the characteristics of enrolled clients, patterns in chronic complaints and coexisting health conditions, symptom and quality-of-life measures, safety and adverse effects, and costs of care. Data may support analyses across different clinical questions and participant groups over time. The project builds on earlier European observational research while gathering data from participating PGRN practices in North America and elsewhere.

Study at a glance

Design: prospective, multicenter, observational, longitudinal cohort study; no randomized comparison or control group.

Timeline: clients enter during the first year of the study, beginning with the first client enrolled; follow-up continues for up to eight years.

Practitioners: PGRN professional homeopaths and medical or naturopathic practitioners providing individualized homeopathy, with required ethics training and separate study consent.

Clients: existing clients receiving individualized, adjunctive homeopathic care for chronic complaints who meet the study criteria and provide informed consent.

Information collected: a Health Inventory Form (if not already on file), digital complaint and quality-of-life questionnaires, study follow-ups, and a practitioner remedy log.

What participation involves

Participating practitioners identify eligible clients from their existing practices after the initial appointment(s), explain the study, and conduct the client informed-consent process using the approved materials. They record remedy recommendations and reactions in a practitioner remedy log and provide study follow-up for enrolled clients for up to eight years.

Clients complete health-status assessments at study entry and at six-month intervals in digital format. The Measure Yourself Concerns and Wellbeing (MYCaW) score is recorded at follow-up visits; the EQ-5D-5L and Penny Brohn quality-of-life measures are collected every six months.

When study follow-up coincides with a regularly scheduled clinical appointment, the usual visit may be charged. If a study follow-up is needed outside regular care, the practitioner must complete that visit and the client should not be charged for it. Participation is voluntary, and practitioners may withdraw. Study information is coded and de-identified for analysis, and findings will be reported for groups rather than identifiable individuals. All data collection points are designed to be the least time-consuming possible for practitioners and clients.

Already a PGRN contributing member?

Contact the IAH research team to request the approved Practitioner Information and Consent document and the next steps.

New to the PGRN?

Join as a contributing member and select the optional cohort study interest checkbox. PGRN membership is free.

A PGRN signup or inquiry expresses interest only; it is not study consent or confirmation of eligibility. Practitioner participation requires separate informed consent and completion of required ethics training. Participating homeopaths conduct client recruitment and informed consent, while the research team collects the digital client consent forms. Do not send identifying client information through a membership form or inquiry email.

Help expand the study

Invite a colleague to take part. More participating practices mean a broader set of experiences and health concerns for researchers to examine. More participating practitioners = greater impact of the study on our profession.