Eating one egg a day may help lower Cardiovascular Disease risk

 A total of 4,778 participants of whom 3,401 had a cardiovascular disease. They used a technique called targeted nuclear magnetic resonance to measure 225 metabolites in plasma samples taken from the participant's blood. Of these metabolites, they identified 24 that were associated with self-reported levels of egg consumption.

Their analyses showed that individuals who ate a moderate amount of eggs had higher levels of a protein in their blood called apolipoprotein A1– a building-block of high-density lipoprotein (HDL), also known as 'good lipoprotein'.

These individuals especially had more large HDL molecules in their blood, which help clear cholesterol from the blood vessels and thereby protect against blockages that can lead to heart attacks and stroke. The researchers further identified 14 metabolites that are linked to heart disease. They found that participants who ate fewer eggs had lower levels of beneficial metabolites and higher levels of harmful ones in their blood, compared to those who ate eggs more regularly.

Together, the results provided a potential explanation for how eating a moderate amount of eggs can help protect against heart disease.