I am now 70 years of age. Always been healthy just over weight. My hair was blond as a child but turned Brown by adult. Now in the past two years it has grayed yes but also the brown that is left has turned Blond again and people keep asking if I have done something to my hair as it is noticeable Blond. Also my finger nail on my left (ring finger) has gotten a deep wave in and has being going for about a year. Other than High blood pressure that I take medicine for and a bothering sciatic nerve in the right leg (hip to angle) and recently diagnosed with RA are about the only changes in the past 5 to 7 years. My concern is the change in hair color and the fingernail issue.