If the air is not sufficiently saturated with moisture, unpleasant health concerns may arise; these include dry skin, throat irritation, and dry, itchy eyes. Many people suffer from these symptoms, perhaps without being aware of their causes. Additionally, dry air has a much stronger effect on asthmatics and allergy sufferers than it does on healthy individuals.
The human body is composed of 60 to 80 percent water. So that our bodies do not dry out, our surroundings must have a certain level of humidity. Dry indoor air can have a negative effect on our health and lead to severe problems related to the mucous membranes of the nose, throat, and eyes. If these mucous membranes dry out, an important protective function preventing the intrusion of viruses, germs and bacteria are impaired. This can result in infections of the airways and conjunctivitis. Aside from the common cold, coughing, and itchy eyes, it can also result in acute and chronic diseases. Dry air can also be responsible for poor sleep or sleep disorders which may lead to weakness and fatigue.