High numbers of small, dense LDL particles are associated with increased risk for coronary heart disease in prospective epidemiologic
studies. Subjects with small, dense particles (phenotype B) are at higher risk than those with larger, more buoyant LDL particles (phenotype A).
Interestingly, it has been
found that the TG/HDL-C ratio can predict particle size.
One study found that 79% of individuals with a ratio above 3.8 had a preponderance of small dense LDL particles, whereas 81% of those with a ratio below 3.8 had a preponderance of large buoyant particles.