When Nick Lumi found out St. Luke’s University Health Network was offering free DNA testing, he thought it was a novelty, a chance to find out more about his ancestry. Instead, he learned he had a ...

DEAR DR. ROACH: I am 85 and healthy apart from polycythemia vera, for which I take aspirin. I was interested in the new blood test for cancer. Is it worthwhile? -- M.N. ANSWER: When screening patients ...