My right thumb nail has grown out with a beau s line very deep, I ve had these ridges before but not concerned just attributed it to my cleaning business. I m a 63 female healthy active 5 2 140lbs. Try to eat healthy lot of fruits veggies little red meat. I do wonder about blood sugar tho. If I go over 4 hours without eating I feel it drop really crabby until I eat. ???? of course trying to self dignos