Egg phospholipids and cardiovascular health

Area of Science:

• Nutrition Science
• Cardiovascular Health
• Dietary Lipids

Background:

• Eggs are a significant source of dietary phospholipids (PL) in Western diets.
• Dietary PL may influence inflammation, cholesterol metabolism, and high-density lipoprotein (HDL) function.
• Egg-derived phosphatidylcholine (PC) and sphingomyelin show potential in regulating cholesterol absorption and inflammation.

Purpose of the Study:

• To review recent findings on egg PL intake and cardiovascular disease (CVD) risk.
• To summarize basic science, clinical, and epidemiological evidence.
• To highlight areas needing further investigation, such as TMAO response to chronic egg consumption.

Main Methods:

• Literature review of pre-clinical, clinical, and epidemiological studies.
• Analysis of research on egg PL metabolism and its association with CVD biomarkers.
• Examination of the role of gut microbiota in egg PL metabolism.

Main Results:

• Egg PL intake is linked to favorable changes in HDL reverse cholesterol transport biomarkers.
• Egg PC is a substrate for trimethylamine N-oxide (TMAO) generation by gut microbes.
• TMAO is a metabolite associated with increased CVD risk.

Conclusions:

• Dietary phospholipids from eggs have complex effects on cardiovascular health.
• Further research is needed to understand the long-term impact of egg consumption on TMAO levels and CVD risk, especially in specific populations like diabetics.