ok so i have been tracking my symptoms a bit, especially around my tsh and free t3 labs. i notice that on days when my free t3 is kinda dipping - i’m talking really noticeably off the numbers they told me to worry about - the brain fog gets terrible. not just ‘tired’ foggy but like physicalfog. I can’t follow a conversation or remember simple words. but there’s this other thing: my hands are so cold, all the time. even when i put them near the radiator. it feels disconnected from how badly my brain is failing that day. does the physical symptom (cold extremities) and the cognitive one (fog) actually share some mechanism or are they just two separate things happening because of perimenopause hormonal shifts? i’d be interested to hear what others with low t3 noticed about when these symptoms combo. imo like, does it feel more awful on a specific day of the cycle?