The level of moisture in the home is crucial to achieving a healthy home environment. Too little moisture in the home can cause dryness of the nose and respiratory systems, while too much moisture in the home contributes to numerous health impacts, health hazards, and structural home damage. Asthma, allergies, and other respiratory illness are the main health impacts to children and other residents of homes with excessive moisture. Excessive moisture also causes or contributes to other hazards to human health such as mold, cockroaches, dust mites, and peeling lead paint.