I was tired, forgetting words and had brittle nails and hair. Doctors blamed perimenopause... but then I found the real cause. This is what it does to your thyroid, why it's on the rise - and the 50p supplement that fixed me

Daily Mail 1 min read 13 hours ago

Like most working mothers in their mid-forties, Tamsyn Wood, 48, was no stranger to feeling tired after a long day.
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