Egg yolk contains much cholesterol, but it is also rich in important nutrients including vitamins and essential fatty acids. It contains most of the nutrients in an egg.

100 g edible egg yolk contains:

Water………………………50.0 g
Protein……………………...16.1 g
Fat………………………….31.9 g
Carbohydrate………………0.3 g
Minerals……………………1.7 g
Sodium……………………..50 mg
Potassium…………………..140 mg
Magnesium…………………16 mg
Calcium…………………….140 mg
Iron…………………………7200 microgram
Zinc…………………………3800 microgram
Fluoride……………………..30 microgram
Iodide……………………….12 microgram
Selenium……………………19 microgram

Egg yolk is rich in vitamin A, B1, B2 B6, B12, E, D, Nicotinamide, Pantothenic acid, Biotin and Folic acid.

Cholesterol…………………1260 mg
Lecithin………………….…6.79 g

If integrated in your food rightly it is a very nutritive food with rich iron, zinc and selenium contents and vitamins. You could even sacrifice some food supplements.

If you are suffering from coronary diseases consult with your doctor or dietician and they can help you to select the right food.