I have had an adjustable bed for over 20 yrs. It has had some benefit, but I have and still do spend a lot of nights in the recliner, sometimes that is the only place I can get comfortable. Everyone is different and I have been dealing with stress fractures more than anything the last few yrs.
I was on Medicare when I got mine and they would not pay for it back then, but a prescription let me claim the expense on my taxes. Might be different now.
J.R.