A new research in London has confirmed that having two or more chronic illnesses in middle age, known as multimorbidity, is linked to an increased risk of dementia later in life. The study was published in the British Medical Journal.

High blood pressure, diabetes, coronary heart disease, depression, and chronic lung disease are all common chronic illnesses (COPD). The findings reveal that the risk of developing these illnesses at a younger age (mid-50s) rather than later in life is higher.

Multimorbidity was shown to be widespread, particularly among the elderly and persons with dementia. However, there were no research looking into whether multimorbidity at a younger age impacts the risk of dementia later in life. Researchers set out to investigate the long-term relationship between multimorbidity at ages 55, 60, 65, and 70 and eventual dementia in order to fill this information vacuum.

The researchers drew their conclusions from data collected from over 10,000 British men and women who took part in the Whitehall II Study, which looked at the impact of social, behavioural, and biological factors on long-term health. Participants were 35 to 55 years old and clear of dementia when they enrolled in the study in 1985-88.

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