about 6 or 7
The silica and carbon in the coal dust cause black lung diseaseAlso, smoking, which builds up tar in your lungs. The tar turns your lungs black, thats gives you black lung disease, which most people dont realize they have till it turns into lung cancer.
People with medical conditions such as lung or heart disease The elderly
The most prevalent cause of lung disease is most likely smoking. Since smoking inhales smoke to your lungs, it will eventually turn black as you increase the amount you smoke. Also, since smoking is totally preventable, that is why it is prevalent cause.
Mining"Black lung" is also known as "coal miners' pneumoconiosis". As the name suggests - this condition is most commonly associated with coal miners who breath a large amount of coal dust over a number of years into their lungs. But it is not just coal miners who suffer this condition as it is the inhalation of carbon fibres which can cause it - so any workers associated with carbon, such as grinders can suffer the condition. To read more about black lung and how to claim compensation in the UK if you have suffered from black lung see the associated link entitled "black lung disease claims".Its is coal
The most common cause of clubbing is lung cancer. It is also commonly caused by other lung/heart diseases like interstitial lung disease or really any disease that causes chronic hypoxia. Hypoxia is a word used to describe the lack of sufficient oxygen supply in the body. Clubbing is caused by lack of oxygen in the blood, so on a basic note, any disease that causes the blood to be depraved of enough oxygen can cause hypoxia. The people most likely to exhibit clubbing are people with lung cancer, as lung cancer is responsible for over 50% of the cases.
Chronic obstructive lung disease. This includes asthma, cystic fibrosis, bronchiectasis, bronchiolitis, and alleric bronchopulmonary aspergillosis. The most common cause of obstructive lung disease is lung scarring after a tuberculosis infection.
Not smoking
The two most common are Black Lung Disease, from inhaling coal dust, and Silicosis, from inhaling dust from silica rock (sandstone).
Infants, people with heart or lung disease, or those with anemia may be more seriously affected.
You are probably looking for the disease 'Sickle cell anemia'. It is most common in blacks but it doesn't mean that if you are black that you have it.
There are many, Emphysema & Lung Cancers are the most common
lung cancer which is the most one people know aboutother wise it could come from any where else in your body