Adding one avocado to a person’s daily diet may modestly improve a blood marker linked to heart disease. The reduction observed in the study corresponded to an estimated 4% decrease in heart disease risk, according to findings published in the Journal of Clinical Lipidology. “Person A carries their cholesterol in fewer, larger LDL particles, and Person B carries their cholesterol in more, smaller LDL particles. Person B’s heart disease risk would be higher because their overall particle count is higher even though a test of their LDL cholesterol would look identical.” The improvement was modest but consistent“Four percent is a modest reduction compared with the 14–29% lower heart disease risk associated with improving the overall diet,” Damani said.