What your fingernails say about your health, part 2 of 2

Today , let’s talk about what your nails can tell you about your health, according to several sources I studied. (They include American Academy of Dermatology; the Arthritis Foundation; Mayo Clinic; Fawcett, Linford, and Stulberg’s “Nail Abnormalities: Clues to Systemic Disease,” Dr. Andrew Weil; and Web MD.) Cracked or split nails: thyroid disease (or, with…