This myth is one that seems to intermittently appear/disappear every year or so. “Don’t eat egg yolks, only have egg whites… no actually, egg yolks are fine… wait, no, definitely don’t have egg yolks… maybe eggs in general are bad…?”
The truth of the matter is, eggs are extremely nutritious as a food source, and there is no reason we shouldn’t have them (including the egg yolk) as part of a balanced diet. Egg yolks have been demonised because they are quite high in cholesterol; however, studies have shown that eating foods with a high cholesterol content is not strongly linked with an increase in blood cholesterol.
In fact, studies suggest that even 6 eggs / day (the highest intake studied so far) does not adversely affect the blood lipid profile of healthy individuals. A moderate intake of eggs, coupled with a healthy diet, has even been shown to improve the blood lipid profile in unhealthy individuals.
Eggs have never been directly linked to an increased risk of cardiovascular disease in healthy people - so, as long as you don’t have any pre-existing conditions, there is almost no risk of eggs/egg yolks negatively impacting your health at all.
Eggs are a great source of protein, fats and other nutrients - any link to high cholesterol or cardiovascular disease has been grossly exaggerated. There is definitely a place for egg yolks in any healthy diet - just don’t feel as though you now need to have 6 per day!