Vertical lines on your nails  Many people think it’s just a cosmetic feature, but in reality, it can be a sign of serious health issues 
If you notice these kinds of lines on your nails,see a doctor right away  Here’s why  More details in the first comment 
Have you ever noticed thin vertical lines running from the base to the tip of your nail? Many consider them a minor aesthetic detail, but these lines can actually be key indicators of your health.
Our nails aren’t just canvases for nail polish – they’re real indicators of internal bodily processes.
Although we rarely think about it, nails are directly connected to major systems like circulation, metabolism, and the nervous system.
Vertical ridges can appear as a sign of dehydration, fatigue, nutrient deficiency, or prolonged stress.
Sometimes the body can’t “tell” us directly that something’s wrong – so it sends signs. And nails are one of those signs.
When the body lacks iron, red blood cells transport less oxygen. As a result, nail growth slows down, and these lines may appear.
Additional symptoms include fatigue, pale skin, and dizziness.