
If you have these lines on your nails after 40, it is a clear sign that..
Horizontal lines (Beau’s lines): These can suggest past illness, significant stress, or chronic conditions such as diabetes or circulation issues. Vertical ridges: While common with aging, unusually deep or uneven ridges could point to nutritional deficiencies like iron or vitamin B12 shortage. Dark streaks: Sudden appearance of dark streaks may signal melanoma, a serious skin cancer, and require…