A Hidden Trait May Be Connected to Dementia Risk
Dementia risk is influenced by many factors, and a recent study published in eLife suggests that one unexpected trait may also be linked: height.
Height is not usually something people think of as a sign of future health concerns. However, this research found that taller men may have a lower risk of developing dementia later in life.
Researchers reported a 10% lower dementia risk in men for every 6 centimeters above 5 foot 5 inches.
Why Researchers Took a Closer Look
Earlier studies had already pointed to a possible connection between height and dementia. But those studies did not fully account for genetics, environmental influences, or other shared factors.
To explore the link more carefully, researchers examined 666,000 Danish men born between 1939 and 1959. Among them, 10,599 developed dementia during the study period.
The researchers also considered intelligence and education, but these did not explain the results. In fact, the relationship between height and dementia became even more noticeable.
The connection was also seen when comparing brothers of different heights, and similar findings appeared in twins as well.
According to the study, men who were taller in early adulthood had a lower risk of dementia later in life. This pattern remained even after adjusting for education and intelligence.
The findings support a relationship between height and dementia risk that cannot be explained by shared genetics or by other exposures siblings may have in common.
What This Means
More research is still needed, but this study adds to growing evidence that height in young men may be linked to dementia risk later in life.
Researchers believe the answer may lie in early childhood, although more studies will be needed before clearer conclusions can be made.
Bottom Line
This study strengthens the connection between height and dementia risk in young men. While it does not provide all the answers, it helps guide future research in an important direction.
