A Siberian Husky's coat is thicker than that of most other dog breeds, comprising two layers: a dense undercoat and a longer topcoat of short, straight guard hairs. It protects the dogs effectively against harsh Arctic winters, but the coat also reflects heat in the summer.
Interstitial lung disease associated with RA typically includes interstitial pneumonias and bronchiolitis (inflammation of the small air passages of the lungs called the bronchioles), as well as damage to alveoli. The symptoms of interstitial lung disease include shortness of breath, pain, and difficulty breathing.1,2. The formation of nodules in the lungs occurs in a small minority of patients with RA (less than 1%). RA nodules are more common in men than women. Typically, nodules are asymptomatic.
Exposure to high levels of radon through breathing air is known to cause lung diseases. When long-term exposure occurs radon increases the chances of developing lung cancer. Radon can only cause cancer after several years of exposure. Radon may be radioactive, but it gives of little actual gamma radiation. As a result, harmful effects from exposure to radon radiation without actual contact with radon compounds are not likely to occur. It is not known whether radon can cause health effects in other organs besides the lungs. The effects of radon, which is found in food or drinking water, are unknown.