Great to hear your labs came back that way, and your TSH numbers are low. I am hypothyroid...had very high triglycerides (not 1500, yikes!) and changed to the AIP diet which is basically antiflammatory. Everything went back to normal so I stick with this restricted eating plan. And I concur--that getting a low thyroid dx as a kid would definitely affect behavior. Docs treat hypothyroid lightly because it isn't fatal, but it's a frustrating condition because it affects so many aspects of daily life: energy levels, mood, weight, thinking, etc.