Woman holding eggs in a supermarket Eggs are low in calories and rich in protein. A large hard-boiled egg contains 78 calories and several important nutrients, including: lutein and zeaxanthin, which are antioxidants that support healthy eyesight vitamin D, which promotes bone health and immune function choline, which boosts the metabolism and helps with fetal brain development The simplest way to lose weight is to curb the intake of calories, and adding eggs to the diet may help. For example, a lunch or dinner of two hard-boiled eggs and a cup of mixed vegetables contains just 274 calories. However, cooking eggs with oils or butter increases the caloric and fat contents significantly. A tablespoon of olive oil, for example, contains 119 calories. Read more: https://www.medicalnewstoday.com/articles/323251.php