Lower IQ, worse heart fitness in teens linked to risk of early dementia in men

March 17, 2014, HealthDay

Having a lower IQ or poorer fitness at age 18 might increase a man’s risk of developing dementia before age 60, a new study suggests.

The analysis of data from 1.1 million Swedish men suggested that the risk of early onset dementia was 2.5 times higher in those with poorer heart fitness, four times higher in those with a lower IQ, and seven times higher in those with both risk factors.

The men were first tested as part of Sweden’s national military service conscription and followed for up to 42 years.

The increased dementia risk remained even when the University of Gothenburg researchers took into account other risk factors, such as socioeconomic status and medical and family history, according to the study, which was published online recently in the journal Brain. Continue reading