@kevtan
Yes, I inherited the tendency from my father who was lucky enough to have a doctor that used T3 for depression and knew of the problem.
Interestingly, my father never alerted me, but I was lucky enought to also have a doctor that tested me.

My general practioner called that doctor, "the Quack", but the "Quack" found my t3 deficit and also found my gluten intolerance which made such an impact that 15 years of white cells irregularity was normalized in 6 months after stopping gluten. My GP stopped with the quack talk and started checking his other patients with similar symptoms for gluten intolerance and low T3 counts. 🙂 That"quack" changed my life, my GP doctor's practice and the life of many of those GP patients. Pretty good for a "quack"'.
He was very interesting though; I had to take my husband with me to my appointments because he preferred to talk to him; he was brillant but on the autism continuum probably in the Asperger’s syndrome area. He was a blessing to me!