Here are the 7 unusual warning signs from your nails that you should never ignore: 1. *Pale or White Nails*: Pale nail beds can indicate anemia, liver disease, or heart failure. White nails with a darker rim, also known as "Terry's nails," may signal liver or kidney problems. 2. *Blue Nails*: Bluish nails can indicate low blood oxygen levels, potentially signaling lung or heart problems, such as Raynaud's disease. 3. *Yellow Nails*: Yellow nails may indicate fungal infections, psoriasis, or thyr