Yes, I have had nail ridges...and they have been more or less pronounced depending on my general health and nutritional status. They often indicate poor nutrient absorption. If you have access to a copy of Prescription for Nutritional Healing by Balch and Balch and look under Nail Problems they give a list of numerous disorders that show up in the nails with various descriptions. Nails, hair and skin are always a reflection of what is going on inside the body.