Is Cognition Affected by Obesity/Metabolic Disease?

A recent provocative study : “Childhood Metabolic Biomarkers Are Associated with Performance on Cognitive Tasks in Young Children” ALB Shapiro et al. J Pediatr 2019; 211: 92-7

Methods: Data were obtained from children (n=137, 4.6 years old on average) participating in the Healthy Start study, a pre-birth cohort in Colorado. This included metabolic markers (HOMA-IR, glucose, insulin) and cognitive performance markers (Flanker task, Dimensional Change Card Sort test (which assesses cognitive flexibility), and Picture Vocabulary test).

Key findings:

  • HOMA-IR, glucose, and insulin were all inversely significantly-associated with cognitive flexibility testing. Thus, the authors found that “greater blood biomarkers of poor metabolic health are related to lower cognitive flexibility and inhibitory control in healthy, young children.”

Discussion:

  • The authors note that their findings “contribute to the large body of literature in children with overt type 1 and type 2 diabetes that demonstrates consistent and negative effects of poor metabolic health on cognition.”
  • The metabolic effects on cognition may be more critical in childhood due to brain maturation as well as potential for longer exposure periods.  However, studies from adults indicate that “adults without overt diabetes, the cumulative burden of metabolic conditions (eg. obesity, hyperglycemia) was significantly associated with lower cognitive scores.”

My take: While the effects of metabolic disease on cardiovascular disease is well-recognized, this study adds to the body of knowledge that indicates the potential harm of metabolic disease on the brain as well.

Near Chattahoochee River

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.