6. Loose Nails
Image source: healthool.com
Injuries like getting your finger caught in a car door can result in the fingernail falling off, but if your nails start to loosen or fall off without a cause, it could indicate a hormone imbalance, nail infection, poor blood supply, or hyperthyroidism. Hyperthyroidism tells your body to produce an excess quantity of thyroid hormones, which can cause your nails to detach. Another possible cause is onychomycosis, which is an infection that can loosen the toenails.
