Reports

Emerging Lifestyle Patterns:Poor Sleep, Stress and Obesity Linked to Rising Breast Cancer Risk in India, ICMR Analysis Finds

According to the analysis led by the ICMR-National Centre for Disease Informatics and Research (NCDIR) in Bengaluru, breast cancer cases in the country are projected to grow by about 5.6 percent annually, potentially adding nearly 50,000 new cases each year if current trends persist.

• By Newsdesk
• New Delhi
• Dec 25, 2025

Reports

A comprehensive investigation by the Indian Council of Medical Research (ICMR) has revealed that shifts in women’s lifestyle and biological patterns including inadequate sleep, escalating stress levels and central obesity are increasingly driving breast cancer risk in India. The study underscores the urgent need for enhanced public health focus on prevention, early detection and lifestyle interventions. 

According to the analysis led by the ICMR-National Centre for Disease Informatics and Research (NCDIR) in Bengaluru, breast cancer cases in the country are projected to grow by about 5.6 percent annually, potentially adding nearly 50,000 new cases each year if current trends persist. 

The research team conducted a systematic review and meta-analysis of nearly 1,900 scientific papers published up to December 22, 2024, eventually including 31 quality studies that shed light on India-specific risk drivers. 

Among the key lifestyle factors emerging from the review were poor sleep quality, irregular sleep patterns, and high stress levels. Studies showed that women with disrupted sleep including those sleeping in illuminated environments had higher breast cancer risk, a pattern experts link to hormonal imbalance and circadian rhythm disturbances. Regular physical activity, by contrast, consistently showed protective benefits.

The analysis also highlighted central obesity measured through waist-to-hip ratios as a particularly strong metabolic risk factor. Researchers noted that abdominal fat may play a more significant role in elevating cancer risk than overall body mass, especially among post-menopausal women. 

In addition to lifestyle factors, reproductive and hormonal elements such as later menopause (after age 50), delayed first childbirth (after age 30), higher age at marriage and a family history of cancer were also linked to increased breast cancer risk, pointing to a complex interplay of biological and environmental influences. 

Clinicians and public health experts say the findings reflect broader societal changes spurred by urbanisation, dietary transitions and evolving work–life patterns. They emphasize that while age and genetics remain important, modifiable behaviours like sleep, stress management and weight control must be central to breast cancer prevention strategies. 

The authors of the ICMR study called for larger, population-based cohort research and stronger awareness campaigns focused on early detection, screening and lifestyle modification, particularly for women in their 40s and beyond, who are increasingly affected by the disease.