7. Acne Around the Jawline
Breakouts along the jawline or chin often point to hormonal imbalances.
8. Darkened or Thickened Skin
Skin that becomes darker or thicker could signal insulin resistance, a condition that might lead to type 2 diabetes.
9. Dark Lines on Nails
Black vertical lines on your nails may be harmless or due to injury, but they can also indicate melanoma.
10. Scalloped Tongue
A scalloped tongue means it’s swollen and pressing against your teeth. This can be caused by frequent consumption of salty foods, among other things.
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