To its credit, the boiled egg diet includes other foods besides just boiled eggs. However, it does promote eating several eggs every day.
“The boiled egg diet is a low calorie, low carbohydrate diet that will promote weight loss due to a calorie deficit,” says nutrition consultant Erin Palinski-Wade (via Newsweek). “The general outline of the meal plan is to eat two eggs with fruit at breakfast and then eggs or another lean protein with non-starchy vegetables at the other two meals during the day.”
According to Women’s Health, the diet advises restricting foods with a lot of carbs, including potatoes, bread, processed foods, and sugar. At the same time, it suggests eating skinless chicken, fish, and pork for protein; a limited selection of fruits, including grapefruit, lemon, and lime; and non-starchy vegetables, like kale, spinach, and onions. It does not allow for snacks during the day or any desserts.
Consequently, it doesn’t provide a nutritionally balanced diet. Since calories are severely restricted, the weight loss that occurs isn’t sustainable. The weight will return once the 14-day diet plan is over and you return to normal eating.