McCall McPhersonFounder, Modern Thyroid Clinic.

T3 & Fertility: Get Pregnant & Stay Pregnant! #shorts

11 Aug 2025 · 1 min

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This content was created by McCall McPherson. This content was uploaded by McCall McPherson. This is a YouTube short titled "T3 & Fertility: Get Pregnant & Stay Pregnant! #shorts" (created 2025-08-11T16:19:37+00:00, last edited 2026-01-30T22:53:14+00:00) featuring McCall McPherson as the solo speaker. The clip is a medical/opinion piece about the role of T3 in fertility — arguing T3 is important for egg quality, ovulation, luteal phase function and implantation, and that optimizing T3 can help achieve and maintain pregnancy. McPherson critiques blanket clinical warnings against T3 in pregnancy, advises checking a panel of labs (TSH, free T4, free T3, reverse T3 and antibodies), and cites an anecdotal clinical success (including a patient with nine prior miscarriages) after optimizing thyroid and hormones.

Chapters

Let's talk about T3. I get this question all the time. Can I take T3 when I'm pregnant? Can I take T3 now if I know I want to get pregnant in the future? So let's talk about T3 and fertility. T3 plays a crucial role in egg quality, ovulation and cycle regulation. Without sufficient T3, egg maturation, luteal phase function and implantation success might be compromised. So I always say this. T3 helps you get pregnant and, and stay pregnant. Now medicine in general says, oh my God, do not, do not use T3 in pregnant women. The baby won't have access to an FT4 and the T3 doesn't cross the placental barrier. Guess what, guys? Two things can happen at once. People can have an FT3 and they can also have an FT4. You know how I know? Actually freaking check it, right? Like if you're trying to infer all of these data points all from a tsh, I can see how clinicians would be anxious. There's a really simple solution and it's just to check to TSH free T4 to ensure the baby has access to it, free T3, reverse T3 and antibodies. So let's just do it. I have successfully taken women with infertility a history, literally one of them had nine miscarriages and took her through successful pregnancy by optimizing thyroid and hormones to an extent too right?