Hello. I had a blood test done and get this results: Methyl Malonic Acid: 0,62 umol/L Ref: 0,08 – 0,56 umol/L B12: 997 pg/ml Ref: 211 – 911 pg/ml This results I get without supplementing b12. So I have High b12 and high MMA. My symptoms are fatigue, low body temperature and pain on legs. Since I had low body temperature, I starting taking thyroid hormone, but this don’t worked, my temperature don’t increased and I get hyperthyroid symptoms (weight loss, anxiety, etc). Starting taking methylb12, 5.000 mcg, but I feel worse whit it, fell sleepy and fatigued. So I switched to hydroxyb12, 1.000 mcg, don’t feel worse, but don’t feel better either. What can I do? My real doubt is if b12 deficiency can lower your body temperature? Since I don’t respond to thyroid therapy, maybe the cause of my cold body is the b12. If methyl gives me sleepy, should I take it at night? Has someone here increased his body temperature whit b12? Thank you very much.