At sleep study i had zero apnea's, 2 centrals and 14 hypopnea's resulting in pulse ox lowest of 83. how is this considered mild? very overweight :(

Need more info: To get a rdi, respiratory disturbance index, need to know the # of apneas + hypopneas per hour. You do not tell us how much recorded sleep in minutes or hours you had to get the 14 hypopneas. A desaturation to 83% is considered on the low side, prefer it to stay> 85%. So from your information, you do have some oxygenation problems. Can't specifically comment on level of apnea.

It's a number : Your index is a number that compares # of events per hour on average. Normal people have index of up to 5 per hour. If in range of 5-15, it is mild. Symptoms, however , mandate treatment. Consider all options. Good luck. You can google my ( or anyone else's ) website for more info.