Bagels are very tasty and there are very few people who can say that they don’t like them. However, when you consider the unhealthy impacts of bagels, you would definitely want to stay away from it as much as possible, despite the amazing taste. Each piece of bagel contains 70g of carbohydrates, and offers an excess of 400 calories to your body. The spread of butter and cream cheese on top will help you to add another 40 to 50 calories. So, every piece of bagel packs a punch of calories that can add several inches to that waistline you work so hard to maintain.