In a double-blind, randomized, Spanish study, 40 postmenopausal women consumed 1.13 Columbus eggs per day while the control group consumed 0.65 standard eggs per day without further dietary changes.
The metabolic risk parameters (blood lipids, blood pressure, insulin, glycosylated hemoglobin, weight, waist circumference) evaluated before and after 8 weeks showed an improvement in cardiovascular risk of 3% according to Frammingham.
Triglycerides (-9.6%), insulin (-20%), blood pressure (-6%) and weight (-600 g) are improved, suggesting the value of substituting standard eggs for Columbus eggs in this population.
Reference: Prado Martinez, C., et al., 2002. Effects of substituting standard eggs for Columbus eggs in the diet of Spanish postmenopausal female volunteers. Wild Food for Health 125 – 138.