McCall McPhersonFounder, Modern Thyroid Clinic.

Has your body composition changed? Get a full thyroid panel #thyroidpanel #thyroidlabs #thyroid

25 Jun 2026 · 1 min

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1:12

In this concise health advisory, McCall McPherson explains that adults in their 30s who notice unexpected changes in body composition should pursue a comprehensive thyroid panel rather than relying on the standard TSH test alone. She outlines how the risk of hypothyroidism rises with age and how typical medical visits often only assess TSH, which she describes as insufficient on its own. McPherson lists common yet often overlooked symptoms—fatigue, brain fog, irregular menstrual cycles, weight gain, and hair loss—that may signal thyroid dysfunction. She emphasizes the importance of evaluating the full suite of thyroid markers (TSH, free T4, free 3, reverse T3, TPO antibodies, and thyroglobulin antibodies) and aiming for optimal lab values rather than merely “normal” ranges. Finally, she directs viewers to a free lab guide from the Modern Thyroid Clinic (gift.modernthyroidclinic.com) where optimal ranges are provided for personal lab analysis.

Chapters

If your body composition has changed in your 30s despite like you doing all the things you normally do, it's time for a full thyroid panel. As we age, our risk for hypothyroidism increases, and when you go to your regular doctor, they're not going to check a full thyroid panel. They're going to check TSH, which is honestly useless by itself. And so we need to know early because one, We're symptomatic and we don't even realize it sometimes. Or two, we're so fatigued, so brain fog, we're having period cycles that are weird, you know, weight gain, hair loss, and we never put the pieces together. We go to— or we do, and we go to the doctor or clinician and they say, no, it's not your thyroid, everything's fine. But we can't ever actually determine that unless you check all of your thyroid labs: TSH, free T4, free T3, reverse T3, and TPO and thyroglobulin antibodies. So important. And look for optimal, not normal. If you want our lab guide for Modern Thyroid Clinic, I literally share our optimal lab ranges freely so that you can analyze your own labs because you can't simply rely on someone telling— rely on someone telling you that it's normal. Head to gift.modernthyroidclinic.com.