I work in software company as Admin and IT head. My work involves sitting in front of computer for at least 4-5 hrs everyday. I walk 30 minutes everyday. I drink at least 3 litres water everyday. From last 2 years I started feel fatigue and dizzy everyday. I lost nearly 10 kgs during suffering from severe acid reflux. I did endoscopy and colonoscopy after a Gastroenterologist advice. I took Ganaton tablets for 3 months. Now I don't have acid reflux but dizziness is there. Sometimes I feel burning sensation inside my palms and inside foot. Some times I feel like prickling in left leg calve area. My health checkup shows. If I touch very cold water, nerves in my palm bulge twice size and protruding. I have severe constipation and more gas formation. Fasting sugar: 90 Post sugar: 102 BP: 120/70 Total Cholesterol: 170 Vitamin B12: 26 I suspect it is because of Vitamin B12 deficiency. Can you please suggest me any B12 supplement and other food habits to follow to rectify the problem.