DEAR DR. ROACH: I’m a healthy 70-year-old female who still works full-time and plays tennis regularly. I’m 5 feet, 6 inches tall and weigh 140 pounds. My concern is my memory, especially my speech. English is my second language, but I’ve been in the United States for over 40 years. Words often disappear from me when I need them and come back later when the subject is closed. ...read more read less