Allergies occur when your immune system reacts to a foreign substance such as pollen, bee venom or pet dander. Your immune system produces substances known as antibodies.
This content has not been reviewed within the past 2 years and may not represent WebMD's most up-to-date information. To find the most current information, please enter your topic of interest into our search box. What do you think of when you hear the term 'energy balance' -- maybe a skateboard stunt or a yoga pose? You're probably familiar with the balancing act of juggling career, family, friends, community, and personal needs. Weighing in once weekly (or even more often) is the easiest method to determine whether you're in energy balance. Choosing foods that are high in fiber, fluid, and nutrients that fill you up on fewer calories is the secret to painless calorie cutting. Fruits, vegetables, beans, whole grains, low-fat dairy, and small portions of lean meats and nuts are the kind of foods you should be enjoying each day. Unprocessed foods (those in their natural form) are the healthiest options at the grocery store.