Well , good morning , Tom . I haven't seen you for a long time .   I'd been feeling pretty well until just a few days ago .   What seems to be the trouble now ?   I feel run down , tired . I've been having headaches almost every day . And I'm not getting as much sleep as usually do .   Have you been eating properly ? Eating the right kind of food is important for your health , you know .   Well , I haven't been eating well , I guess . I usually only have enough time to grab a sandwich and a cup of coffee for lunch .   And what about dinner ?   Sometimes I'm too tired to eat anything at all .   That's not good . You don't have a well-balanced diet . Have you been taking vitamin pills ?   I don't like to take any medicine at all without talking it over with a doctor first . 