If you have lines on your nails, it means you have c…See more

flow beneath the nail bed), and free of deep ridges or discoloration.
 They grow steadily—about 2–3 millimeters per month.
When the body experiences stress, nutritional deficiency, infection, or chronic illness, nail growth and appearance may change.
One of the most common changes is brittle or easily broken nails.
While this can result from frequent exposure to water, chemicals, or aging, it may also indicate iron deficiency anemia or thyroid disorders.
Iron plays a critical role in oxygen transport within the blood. When iron levels are low, tissues—including the nail matrix—may not receive adequate oxygen, leading to thin, fragile nails.
Hypothyroidism