Definitely. My thyroid is ok but im about to start testosterone treatment, my hormones are completely and utterly stuffed. HRT with estrogen and progesterone have helped, but i am sluggish, lethargic, demotivated, depressed, couldnt care if i never had sex again and when i do, it feels like nothing, im not gaining weight but am definietly losing muscle, and despite all the exercise i do, i get less aerobically fit by the week. Its really alarming. My adrenals are shot and i feel like crap, and ive got the brain power of an alzheimers sufferer.
I cant say for sure that its chemo that caused it, but personlly, i wouldnt look much further for answers. So why not your thyroid?