I actually took a medical ethics class last Fall that dealt with a similar issue.
The position I found myself in is that I want my doctor to make recommendations for lifestyle changes and be honest with me about the potential impacts on my health, but I want to be able to judge for myself whether to follow those recommendations based on how much changing an aspect of my life would affect its quality.
The same goes for any medications. A doctor can recommend that I take a particular medication to help with headaches, for example, but if a side effect of that medication is incontinence, I might find the side effects to be less desirable than the medication, and stop taking it. In that situation, it is now my responsibility to speak to my doctor and say something to the effect of "This isn't working, what else can we try?"
Unfortunately, I can't read that reddit thread as it's been deleted. Can someone give me a summary of what it was saying?