I think some people just have them more than others, they can be very normal and it's not necessarily something to worry about
. My mother is healthy as can be and she has always had ridges on her nails. I probably do, too, but I buff my nails regularly.
Treat yourself to a pedicure, I bet a good nail tech can tell you how common they are.
49 year old female attorney, diagnosed UC/pancolitis 1985, no surgery but much suffering.
Asacol/5ASA 6x400 mg maintenance for 20+ years; use prednisone & Rowasa for flares.
August 2008 sought care of naturopathic doctor. Food sensitivity test showed wheat/gluten, other intolerances; eliminated all wheat/gluten from my diet. Probiotics (Ultimate Flora, 50 billion), trying Curamin. Doing OK, but still have some bad days.