Dementia Care Research and Psychosocial Factors

Area of Science:

• Gerontology
• Neuroscience
• Public Health

Background:

• India faces a rapidly aging population, with over 153 million individuals over 60, projected to double by 2050.
• This demographic shift poses a significant risk for increased cognitive impairment and dementia burden.
• Proactive strategies for early identification and management of risk factors are crucial for dementia prevention.

Purpose of the Study:

• To investigate the prevalence of vascular and metabolic risk factors for cognitive impairment in Indian populations.
• To identify modifiable risk factors associated with cognitive decline in aging individuals.
• To inform public health strategies for dementia prevention in low- and middle-income countries.

Main Methods:

• Utilized baseline data from the Tata Longitudinal Study of Aging (TLSA) and Srinivaspura Aging Neuro Senescence and COGnition (SANSCOG) cohorts.
• Analyzed urban and rural populations in southern India to assess cognitive impairment risk factors.
• Examined prevalence of hypertension, diabetes, metabolic syndrome, insulin resistance, homocysteine levels, and sleep patterns.

Main Results:

• High prevalence of hypertension (39.84%) and diabetes (22.77%) noted, with greater burden in rural areas.
• Metabolic syndrome affected 46.2% of rural and 54.8% of urban populations; insulin resistance was high in urban dwellers (56.5%).
• Higher cardiovascular risk correlated with cognitive domain impairment; elevated homocysteine and poorer sleep were linked to language deficits and reduced white matter volume.

Conclusions:

• The study highlights a substantial burden of vascular and metabolic risk factors in India, strongly associated with cognitive impairment.
• These modifiable factors present potential early targets for dementia prevention and delay.
• Low- and middle-income countries with high cardiovascular burdens should prioritize mid-life interventions to mitigate dementia risk.