Understanding Ageing: A Complex and Uneven Process

• Ageing is a universal phenomenon, but it affects individuals differently across time and population groups.

• It is not solely determined by chronological age; biological ageing varies due to molecular, environmental, and socio-economic factors.

• Frailty and age-related decline often occur in unpredictable bursts rather than a linear fashion.

The Scientific Quest for Biological Age

• Since the 1930s, scientists have been trying to decode how ageing can be altered.

• The focus has been on identifying biomarkers—measurable biological indicators—that reflect how old the body truly is.

• Biomarkers are crucial to understanding how individuals respond to diet, exercise, stress, and environment.

The BHARAT Study: India’s Scientific Push Towards Ageing Research

• Launched by the Indian Institute of Science (IISc), Bengaluru, BHARAT stands for Biomarkers of Healthy Aging, Resilience, Adversity, and Transitions.

• It is a flagship effort under the Longevity India Program to define healthy ageing in the Indian context.

• The goal is to build a comprehensive information portal that reflects the physiological, genetic, and lifestyle realities of India’s population.

Global Ageing vs Indian Reality

• Life expectancy has risen globally, including in India, but longer life doesn’t mean healthier life.

• Alarming projections include:

  • 168% increase in Parkinson’s disease in India by 2050.

  • 200% rise in dementia in low- and middle-income countries.

• Most existing biomarkers and diagnostic tools are developed using Western populations, creating a mismatch for Indian patients.

Diagnostic Gaps in the Global South

• Using Western health parameters (e.g., cholesterol, Vitamin D, CRP levels) may misdiagnose Indian patients.

• Example: Elevated CRP is common in Indians without acute illness — a result of lifelong exposure to infection, pollution, or poor nutrition.

• A one-size-fits-all diagnostic approach may miss early signs of diseases in Indians or falsely categorize them as ill.

The Bharat Baseline: A Unique Indian Reference

• The BHARAT study aims to define “normal” health values for Indian populations, known as the Bharat Baseline.

• This includes:

  • Genomic biomarkers (e.g., disease-linked mutations)

  • Proteomic/metabolic markers (e.g., metabolism, organ stress)

  • Environmental/lifestyle data (e.g., diet, urban exposure)

Predictive and Proactive Healthcare

• The study focuses on identifying early signs of age-related changes before disease sets in.

• Biological age markers could reveal if an organ (like the liver or heart) is “older” than the person’s chronological age.

• This enables timely intervention and prevention, potentially delaying disease onset.

AI and Data Science: Powering the Future of Ageing Research

• BHARAT will use AI and machine learning to manage and interpret complex, multi-dimensional data.

• Benefits of AI in the study:

  • Detect hidden patterns in small, diverse datasets.

  • Simulate outcomes of interventions (diet, therapy, exercise).

  • Help select the most promising health strategies before clinical trials.

Challenges Ahead

• Sample collection from healthy individuals is difficult.

• Sustained government and philanthropic support is critical for long-term success.

• India’s vast genetic, environmental, and cultural diversity requires comprehensive national sampling and adaptive analysis.

Conclusion: Redefining Ageing for a New India

• BHARAT marks a pioneering effort to develop India-specific ageing standards.

• It promises better diagnostics, tailored healthcare, and policies grounded in Indian realities.

• With scientific rigor, technological innovation, and inclusive sampling, the study could redefine what it means to age healthily in India.