Hormones & Weight · 5 minutes
Your Thyroid and Your Weight: Why 'Normal' Isn't Always Enough
The labs your doctor probably didn't run
Conditions: Hypothyroidism, Hashimoto's, Fatigue, Weight Gain
You are exhausted. You are cold when nobody else is. Your hair is thinning. You gained 15 pounds without changing a thing. You went to the doctor, they ran a thyroid test, and told you that you were normal. Sister, that is not the whole story.
Why one number is not enough
Most doctors only order TSH (thyroid stimulating hormone). TSH is a signal from your brain telling your thyroid to work harder. It does not tell you what your thyroid is actually producing or whether your body is using it.
The full panel to ask for
- TSH — the standard screen
- Free T4 — what your thyroid is producing
- Free T3 — the active hormone your cells actually use
- Reverse T3 — can be elevated with chronic stress
- TPO and Thyroglobulin antibodies — to check for Hashimoto's autoimmune thyroid disease
- Ferritin and Vitamin D — both have to be optimal for thyroid hormone to convert properly
Normal vs. optimal
Lab 'normal' for TSH is roughly 0.4–4.5. Many endocrinologists treat symptoms when TSH is above 2.5, especially with antibodies present. Optimal Free T3 is in the upper third of the range. 'Normal' is wide. Optimal is narrow.
What you can do this week
- Request the full panel in writing.
- Get a copy of your labs — do not rely on 'everything looked fine.'
- Track symptoms (fatigue, cold, hair, weight, mood) for 2 weeks before your appointment.
- If you are on levothyroxine and still symptomatic, ask about adding T3 (liothyronine) or a combination.
Coco says
“You are not lazy. You are not crazy. Your thyroid might just be quietly tired — and you deserve a full picture.”
For educational purposes only. Not medical advice. Always consult your healthcare provider.
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