Dear Dr. Roach: I have a question about excipients, something you discussed in a recent column. Twice in my life, I took Celebrex for orthopedic pain. Both times, I suffered severe liver disfunction, turned yellow,…

NEW YORK (AP) — What makes Impossible burgers possible? An engineered ingredient that makes the veggie patty look bloody — and one of many new concoctions food regulators expect to see more of in the…