TSH, T3 , and breastfeeding

Since yesterday I've had a lightbulb moment.

Around the same time as increasing my dose to 100mcg I also stopped breastfeeding.

Since then I've been feeling progressively worse and this is borne out in my results. (My TSH has risen, as has T4, but T3 has dropped to the lowest it's been.)

Does anyone have any insight into the effect of breastfeeding on thyroid levels please?

[SlowDragon Administrator]

Interesting consideration....suggest you read around

Prolactin levels drop certainly

[Hidden in reply to SlowDragon]

Prolactin! Thank you. I needed something to put into Google.

[Hidden]

Thank you! I definitely feel the two things are linked. It's the only thing that's changed and that's a Biggie in terms of hormones!

I'll keep researching.

[Hidden]

I was breastfeeding for a long time. My periods returned about 10 months before I stopped feeding.

Since then I've had an average cycle length of 21 days (😭) so something if definitely up.