HDL subfraction changes with a low-fat, plant-based Complete Health Improvement Program (CHIP).

Area of Science:

• Cardiovascular Disease Research
• Nutritional Science
• Exercise Physiology

Background:

• Low high-density lipoprotein (HDL) cholesterol is a significant cardiovascular disease (CVD) risk factor.
• Low-fat, plant-based diets may reduce CVD risk but can also lower HDL levels.
• The role of different HDL subfractions in CVD risk is not fully understood.

Purpose of the Study:

• To characterize changes in HDL subfractions in individuals experiencing decreased HDL levels.
• To investigate the impact of the CHIP (Comprehensive Health Improvement Program) intervention on HDL subfractions.
• To correlate changes in HDL subfractions with diet and exercise modifications.

Main Methods:

• A cohort of 22 participants in the CHIP intervention were assessed at baseline and 30 days.
• Measurements included body mass index (BMI), blood pressure, lipid profiles (including HDL subfractions), and fasting glucose.
• Dietary intake and physical activity levels were also monitored.

Main Results:

• HDL cholesterol significantly decreased by 10.6% (p<0.001).
• Significant reductions were observed in BMI, systolic blood pressure, total cholesterol, LDL, and fasting glucose.
• All HDL subfractions (large, intermediate, and small) decreased, with small HDL showing the largest reduction (22%, p=0.005).
• Physical activity and whole plant-food consumption increased, while non-plant food intake decreased.

Conclusions:

• The CHIP intervention, involving a low-fat, whole-food, plant-based diet and exercise, led to a decrease in overall HDL and its subfractions.
• Further research is needed to understand how behavioral changes influence HDL particle remodeling and its functional impact on CVD risk.