There are some concerning statements Dr. Komaroff makes in this interview, especially around exercise. No ME/cfs specialist should be discussing a patient trying exercise without mentioning careful heart rate monitoring, something any doctor trained to deal with ME/cfs *must* be trained on. Until regular doctors are trained in this, not one should ever mention exercise to a ME/cfs patient. I have paid out-of-pocket for three expensive ME/cfs specialists. Not one taught me how to use heart rate monitoring, they may mention wearing a monitor, but they don't teach you how to use it, how to track, how to check your status upon waking. Thankfully other patients online discuss how to do this and it has been enormously helpful.
Also, there are different phases of ME/cfs and people have to reach a certain baseline of stability before any sort of exercise can be attempted, and when relapse occurs, attempts to exercise need to cease. Until a certain baseline is reached (something we cannot clinically define, but most patients can "feel" when they are able to do more), the only discussion should be about prioritizing exertion to Activities of Daily Living. This is imperative. It doesn't matter if a patient is able to spend 10 minutes on a stationary bike if they are then reduced to a week in bed without showering. This is especially concerning in that so many patients do not qualify for support services and are living in vulnerable conditions. I find these sorts of coy discussions about gently encouraging patients to exercise haughty when the doctors are not discussing the shocking levels of debilitation and neglect many patients experience. I noticed one of his slides discussed "exercise intolerance." ME/cfs is about "exertion intolerance." It's pretty challenging to have the medical community properly informed when experts obfuscate the nature of the condition by using inappropriate language...but then Komaroff helped coin the term "Chronic Fatigue Syndrome" so this seems to be an ongoing problem with him.
I appreciate parts of the theory he is discussing here about neurons being dedicated to "sickness behavior." However, this is another term that is frequently misconstrued as others hear it to mean our situation is behavioral, a.k.a. a choice, when the term means something else. If his theory is correct, then we are discussing a major signaling interface that controls and commands multiple bodily symptoms, because the experience of PEM is not merely one of a patient being tired and needing to rest up like with the flu. Flu-like sensations are only part of a kaleidoscope of symptoms I never experienced when I've had the flu...and mere exertion can impact many systems.