Yellow nails
Fingernail lines aren’t the only clues into your health — you should always look at color too! Yellow fingernails or toenails may be a sign that your nails are separating from the nailbed. This symptom is associated with injury, infection, thyroid issues and psoriasis. It may also be a sign of a chronic respiratory disease, like bronchitis or lung cancer. Yellow nails also go along with swelling of the hands, called lymphedema. That’s not all: a yellow nail hue could be a side effect of prescription drugs, so make sure to check with your doctor.
If you feel fine other than the fact that your nails have a slightly yellowish hue, perhaps it’s the result of a new nail product (like nail hardener) or red nail polish. If you smoke cigarettes, that could also be the culprit — just another reason to quit.
