Some brands are healthier than others. For example, some brands use trans-fat-free oil and contain less sodium. However, all types of microwave popcorn generally have a high level of saturated fat and calories. In addition, some microwave popcorn manufacturers use artificial flavors and preservatives. As a result, it is important to read the labels carefully before purchasing microwave popcorn. Microwave popcorn can be part of a healthy diet if it is eaten in moderation and as part of a balanced diet.