Red blood cells carry oxygen from the lungs to all parts of the body, and iron is a necessary mineral for this process. Low iron levels often result in anemia, which produces symptoms such as fatigue, rapid heartbeat, and shortness of breath during physical activity. Many vegetarians are concerned about how they can get enough iron without consuming meat. The Academy of Nutrition and Dietetics has a very informative, downloadable information sheet that discusses this topic.
PositiveTip: Enjoy worry-free vegetarian cuisine when you eat with a knowledge that informs good choices.