What Causes Hypercapnia? Won’t Breathe, Can’t Breathe or Something in between?

The article reports on studies of the causes of hypercapnia on patients with obstructive sleep apnea (OSA). A study showed that leptin deficiency may be responsible for hypercapnia in OSA particularly when it occurs with obesity and led to examinations of leptin levels in patients with OSA. Some studies showed that leptin is increased by obesity and by hypoxia.