If you’re a woman in your 40s, 50s, or 60s and you’ve been feeling tired, foggy headed, moody, or frustrated with stubborn weight gain, you’re not alone. Many women in midlife experience these changes and are told by their doctor, “Your thyroid tests are normal.”But here’s the truth: most conventional thyroid panels only check TSH (thyroid-stimulating hormone) — and that’s just one small piece of the puzzle.