Heart palpitations can be triggered by stress, exercise, medication or, rarely, a medical condition. Although heart palpitations can be worrisome, they're usually harmless. In rare cases, heart palpitations can be a symptom of a more serious heart condition, such as an irregular heartbeat (arrhythmia), that may require treatment. Symptoms.
Long-term exposure to radon can lead to lung cancer, the only cancer proven to be associated with inhaling radon. There has been a suggestion of increased risk of leukemia associated with radon exposure in adults and children; however, the evidence is not conclusive.
But long term exposure can cause lung cancer, which starts with coughing, coughing up blood, lung pain, breath shortness and more. +1 vote! Radon exposure has many of the characteristics of lung cancer such as a prolonged cough that doesn't get better, coughing up blood, chest pain and wheezing. Prolonged high radon exposure can actually lead to lung cancer.