Gail, I had a hysterectomy when I was 27 due to cervical cancer. I have both of my ovaries, but at age 56 have now gone through menopause. I have not had had any of the issues you write about as a result of my surgery. You might ask your doctor to test your estrogen and testosterone levels, as well as your thyroid levels. Any deficiency in those could cause thinning hair, and brittle nails. BTW, when you take calcium, make sure it includes adequate amounts of vitamin D!