Cognitive health linked to socioeconomic status and early nutrition

Recent studies highlight various lifestyle and socioeconomic factors that influence long-term cognitive health and dementia risk.

A longitudinal study of a British birth cohort published in ‘Innovation in Aging’ found that persistent financial difficulties and low income are linked to poorer cognitive performance, such as reduced processing speed and verbal memory, as early as age 53. MRI scans of participants aged 69 to 71 showed that those with sustained low income exhibited higher rates of brain atrophy and enlarged ventricles.

Research from the Hong Kong University of Science and Technology, published in ‘Neurology’, suggests that early nutrition plays a critical role. By analyzing data from the post-WWII sugar rationing period in the UK, researchers found that individuals with lower sugar consumption during pregnancy and the first two years of life had a 21% to 23% lower risk of developing dementia later in life.

Additionally, a Lancet Commission report indicates that up to 45% of dementia cases may be preventable by addressing 14 specific risk factors. The World Health Organization has emphasized managing factors such as physical inactivity, social isolation, tobacco use, air pollution, hypertension, and diabetes to mitigate neurodegenerative risks.