Sleep Apnea, COPD, and Vitamin D: The CPAP Connection
There is a known link between low vitamin D levels and two serious lung conditions: obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease (COPD). When a person has both of these conditions, it is called overlap syndrome (OS). CPAP machines are commonly used to treat OSA. These machines help keep the airway open during sleep. Interestingly, using a C...