Sleep apnea is caused by extreme weakness and congestion of the esophageal and pharyngeal muscles/cavities.
boom- there I just dismantled a multi billion dollar industry in one sentence.
You can eliminate apnea in about 5 days by stopping meat and dairy and whatever problematic grains are contributing. This will cause other problems, but at least the apnea will be gone. Second best is to severely cut down on you animal protein intake, especially after noontime.
Body temperature?
Get your temperature up to 98.6 or higher and a lot of these problems will go away, then you can start the cleansing - kidney, parasite, intestine, liver, and viola you're healthy again.