Hi i have vit D and b12 very low than normal values ( 6 and 190) and I've been using supplements for the past 2 months. I also have cervical spine straightened. So i have giddiness every now and then. With all these, I'm unable to go for walking alone. I'm afraid of falling somewhere. What is the right time to exercise? And food intake? How much time will it take to come out of this and be normal again?? This's disturbing. I'm kind of depresses with all this. Kindly help me out of this.