Association between adiposity and cognitive function in young men: Hormonal mechanisms.

Area of Science:

• Endocrinology and Metabolism
• Neuroscience and Cognitive Science
• Obesity Research

Background:

• Abdominal obesity is a growing health concern, particularly among young men.
• Emerging evidence suggests a link between metabolic dysfunction, hormonal imbalances, and cognitive impairment.
• Understanding these relationships is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate the association between adiposity, specific hormone levels, and cognitive performance in young men with abdominal obesity.
• To explore the role of insulin resistance and sex hormones in cognitive function within this population.

Main Methods:

• A cross-sectional observational study involving 53 non-diabetic men with abdominal obesity (BMI 37.3 kg/m²).
• Comprehensive assessment of body composition, hormonal profiles (including total testosterone, free testosterone, and SHBG), and cognitive function across five domains.
• Statistical analyses, including age- and education-adjusted performance measures and stepwise regression, were employed.

Main Results:

• Increased total body fat percentage correlated negatively with visuospatial skills and visual memory.
• Insulin resistance (measured by HOMA-IR) showed a negative association with visual cognitive domains.
• Lower total testosterone and higher SHBG levels were associated with poorer executive function and verbal learning/memory, independent of free testosterone.

Conclusions:

• Adiposity and insulin resistance are significantly associated with diminished visual cognitive function in abdominally obese young men.
• An unexpected inverse relationship between SHBG and cognitive measures, particularly executive function, was observed.
• These findings highlight the complex interplay between metabolic health, hormonal status, and cognitive performance in this demographic.