Answer: Eggs are very keto friendly, to the point where some keto dieters eat only eggs.
Eggs are a very popular keto food, present in most keto breakfast recipes. They're a great source of protein and fat, while remaining low in carbs. One large egg contains only 0.4 g of net carbs.
Eggs are so keto-friendly, in fact, that "egg fasts" are a popular trend in the keto community for breaking stalls in weight loss. An egg fast is when a person eats only eggs, healthy fats (butter, olive oil, coconut oil), and cheese for 3-5 days. It's not for everybody...