Surgical interventions tend to be highly evaluated simply because a patient who undergoes extreme measures tends to want to think he gained from it. Surgeons of course do not want to put themselves out of business either. So the “ratings” are high.
Its the same way with weight loss. Its always going to work to some degree. Its easy to get funding for the study. Its easy to conduct the study. You get nice reportable results. And life goes on …. usually without anyone pointing out that the amount of improvement is slight and the weight loss is long and difficult and often temporary.
Yes, losing weight helps. Walking to a mountain top, facing West and eating six ounces of strawberries helps too, but not all that much.
Alot of the weight gain in OSA patients has been due to hormonal set points being beneficial for the persons sleep but not for their health. That is nature’s way of solving the problem. Sacrifice long term health for short term survival. Cpap use usually results in new hormonal values and the body adjusts to long term health rather than just sleeping through the night.
Nobody would ever undergo a kidney transplant to cure sleep apnea but when a side effect of a kidney transplantation is an immediate cure of sleep apnea, one really can’t claim it was a matter of losing weight.