Sex differences in the association between relative Fat Mass and cognitive impairment in hospitalized middle-aged and older patients with type 2 diabetes mellitus in China: a single-center cross-sectional study

Category	Detail
Condition	Cognitive impairment in type 2 diabetes mellitus
Key Mechanisms	Chronic inflammation, insulin resistance, oxidative stress, vascular dysfunction linking adiposity and cognitive decline
Target Population	Hospitalized middle-aged and older adults (≥45 years) with type 2 diabetes mellitus
Care Setting	Hospital endocrinology department, single-center (Tianjin Union Medical Center, China)

Relative fat mass (RFM) is a more accurate adiposity measure than BMI, incorporating waist circumference and height.
Cognitive impairment prevalence is high (~48%) among older Chinese patients with diabetes, with higher rates in women.
Sex-specific differences exist in the association between adiposity and cognitive decline, with women showing stronger links.

Use Montreal Cognitive Assessment (MoCA) to screen for mild cognitive impairment with cutoff <26, adjusting for education.
Diagnose type 2 diabetes mellitus per WHO criteria including fasting plasma glucose, 2-hour plasma glucose, or HbA1c thresholds.
Measure relative fat mass (RFM) using waist circumference and height for better adiposity assessment.

Recognize cognitive impairment in T2DM patients to tailor diabetes self-management education and support.
Consider sex-specific risk profiles when addressing adiposity and cognitive decline in T2DM patients.
Address modifiable cardiovascular risk factors and obesity to potentially mitigate cognitive decline.

Regular cognitive screening in middle-aged and older adults with T2DM, especially women with higher RFM.
Monitor anthropometric measures including waist circumference and RFM alongside traditional BMI.
Track glycemic control closely as poor control may exacerbate cognitive impairment.

Higher relative fat mass is associated with increased risk of cognitive impairment, particularly in women.
Obesity-related mechanisms such as inflammation and vascular dysfunction contribute to cognitive decline.
Cognitive impairment may impair diabetes self-care, creating a vicious cycle of worsening glycemic control.

Hospitalized middle-aged and older adults with type 2 diabetes mellitus in China

Identification of patients with elevated RFM, especially women, may guide targeted interventions to prevent or slow cognitive decline.

Incorporate RFM measurement into routine clinical assessment of adiposity in T2DM patients.
Use MoCA screening regularly to detect early cognitive impairment in diabetic patients.
Adopt sex-specific approaches in evaluating and managing adiposity-related cognitive risks.
Educate patients on the impact of obesity and cognitive function on diabetes self-management.
Address cardiovascular and metabolic risk factors comprehensively to reduce cognitive decline risk.

Clinical Scorecard: Gender-Based Variations in the Link Between Relative Fat Mass and Cognitive Decline Among Hospitalized Middle-Aged and Older Individuals with Type 2 Diabetes in China: A Cross-Sectional Study at a Single Center