Doctors don’t know for sure what causes sarcoidosis. They think that sarcoidosis may be caused by a combination of genetics (family history) and environmental factors (things around you).  Doctors do know that being near certain things may boost your risk of getting sarcoidosis:

• Wood-burning stoves
• Silica (a mineral)
• Insecticides
• Mould
• Certain bacteria in your lungs

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