Like much medical advice, this has changed over time. Now a study of half a million people in China published in the journal Heart has found that eggs are in fact good for you (!) and that one egg a day, like the apple (or has medical opinion on that also changed?), can keep the doctor away!
Doctors now encourage the eating of eggs as part of a healthy diet, as they are one of nature's most nutritionally dense foods - containing high levels of protein, Vitamins A, D, B and B12, as well as lutein and zeaxanthin that can help prevent eye damage in old age.
"One - even two - a day is absolutely fine," says Dr Frankie Phillips, of the British Dietetic Association. "People shouldn't be frightened of eating too many eggs."
Most dieticians suggest boiling or poaching eggs. Frying is not recommended because of the fat and cholesterol in the oil.