CALM-Brain: India's Pioneering Mental Health Research Database Unveiled
In a significant development for neuroscience and psychiatry, the CALM-Brain database was officially released on Wednesday. This first-of-its-kind, large-scale indigenous mental health research initiative is already providing groundbreaking insights into how psychiatric illnesses develop, overlap, and respond to treatment. The findings have the potential to fundamentally reshape how such conditions are understood and managed in the future.
A Collaborative Research Endeavor
The initiative is spearheaded by the Rohini Nilekani Centre for Brain and Mind (CBM), which has been working on this project since 2017. It brings together leading researchers from the National Institute of Mental Health and Neuro Sciences (Nimhans) and the National Centre for Biological Sciences (NCBS). The database currently includes a cohort of 4,000 to 5,000 individuals, with detailed data from approximately 2,500 participants already incorporated into the first phase.
Focus on Five Key Disorders
This longitudinal study concentrates on five major psychiatric disorders:
- Addiction
- Bipolar Disorder
- Dementia
- Obsessive Compulsive Disorder (OCD)
- Schizophrenia
Researchers have plans to expand the scope further in subsequent phases. Dr. YC Janardhan Reddy, CBM coordinator at CBM-Nimhans, explained the comprehensive approach: "We employed multiple methods of inquiry — extensive clinical data, neuroimaging, neuropsychology, electrophysiology, genetics, cell lines, and environmental factors such as childhood adversity. This combination is what makes the dataset truly unique."
Bridging Neuroscience Scales
In neuroscience, while significant progress has been made in understanding how molecules, cells, circuits, and brain structure contribute to function, integrating these different layers remains a substantial challenge. Professor Raghu Padinjat, CBM coordinator at CBM-NCBS, elaborated on the database's purpose: "CALM-Brain was conceived as a method to assemble data from multiple scales of analysis of brain structure and function on a single platform. We believe the application of modern data analysis methods to this dataset will help bridge the gap between these scales of analysis."
Comprehensive Participant Assessments
Participants in the study undergo extensive assessments spanning two to three days, with each individual spending close to 10 hours in total. These evaluations include:
- Clinical evaluations
- Cognitive and memory tests
- MRI scans
- EEG recordings
- Biological sample collection
Researchers plan to follow up with participants over the next 20 years, creating one of the most comprehensive longitudinal mental health studies in India. Dr. Reddy emphasized the importance of this long-term approach: "Such follow-up can help identify biomarkers of vulnerability to mental illness, distinguish clinical phenotypes, and understand treatment responses."
Including Families in Research
Dr. Biju Viswanath, professor of psychiatry at Nimhans, highlighted another crucial aspect of the study: "The research includes not just patients but also their family members — both affected and unaffected. In several cases, entire families with multiple affected individuals participate in the study." This family-based approach provides valuable insights into genetic and environmental factors contributing to mental health conditions.
Potential for Personalized Treatment
Emerging technologies developed as part of the project may help address a longstanding challenge in psychiatry — predicting which treatment will work for which patient. Early lab-based models suggest it may soon be possible to test drug responses using patient-derived cells, potentially reducing reliance on the traditional trial-and-error approach to psychiatric medication prescriptions.
Challenges and Limitations
Despite the promising developments, researchers acknowledged several challenges. Dr. Janardhan Reddy noted that many individuals remain hesitant to participate in research, especially when there are no immediate benefits. He also pointed out that data sharing at both national and international levels continues to face regulatory hurdles that need to be addressed for broader collaboration.
National Mental Health Survey Progress
In related mental health research news, the National Mental Health Survey-2 (NMHS-2), one of the largest mental health studies in the world launched in 2025, is nearing completion. Over 2.5 lakh interviews have been conducted across the country so far. The survey, led by Nimhans in Bengaluru and supported by the Union health ministry, aims to generate nationally representative estimates of mental health disorders across age groups.
The study examines care-seeking behavior, socio-economic impact, caregiver burden, and gaps in mental health services. Using a stratified, multi-stage sampling method based on the NITI Aayog's multidimensional poverty index ensures diverse representation. The national report of NMHS-2 is expected to be released on October 10 this year, coinciding with World Mental Health Day, while individual state and Union Territory reports will be released before December 31.
The CALM-Brain database represents a monumental step forward in Indian mental health research, combining cutting-edge technology with comprehensive data collection to advance our understanding of psychiatric disorders and improve treatment outcomes for millions of affected individuals.
