American Family Physician
https://pubmed.ncbi.nlm.nih.gov/?myncbishare=dukemlib&dr=abstract&otool=dukemlib&term=33983002
Lots of fun facts within the article to know and tell. For instance, did you know that people who ingest walnuts, supplemental fiber, and or grapefruit juice might need to take higher doses of levothyroxine due to drug-food interactions? And we all know that for folks older than 60 if you are going to initiate treatment, start with a low dose such as 12.5-50 mcg per day.