2 months ago my nrbc were 0.0. today they are 1.4. i am 76 years old. is this really unhealthy?

Nucleated RBCs: Nucleated Red Blood Cells (nRBC) are premature forms of normal red blood cells. Generally, they mature in the bone marrow & are not seen in the peripheral blood, but a few occasionally is not a cause for concern. You should repeat the blood test (CBC) in a couple of weeks, and possibly several times over the next year. If the number is increasing, then further evaluation is warranted.