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7. Loss of eyebrows
Sudden eyebrow loss can be a sign of thyroid problems, hyperthyroidism or hypothyroidism.
8. Changes in nails
Nails can tell you a lot about the health of your body. Changes in your nails are a sign of many health conditions. Thin, split nails can be inherited, thanks to genetics, but they can also indicate a lack of calcium in the body. An underactive thyroid gland can also cause changes in your nails.