Vitamin Deficiencies and Suppletion in Morbid Obesity

Vitamin Deficiencies and Suppletion in Morbid Obesity

The purpose of this study is to evaluate the most effective treatment for patients who underwent a Roux-en-Y gastric bypass and developed postoperatively a vitamin B12 deficiency.

Vitamin B12 deficiency accounts up to 23-64% bariatric surgery. The investigators purpose is to evaluate the most effective treatment for vitamin B12 deficiency in patients who underwent a Roux-en-Y gastric bypass.

Daily oral use of vitamin B12 tablets are may be as effective as vitamin B12 injections.

Inclusion Criteria:

• Vitamin B12 deficiency: <200 pmol/l
• Vitamin B12 deficiency 6-12 months after surgery
• All patients underwent a Roux-en-Y gastric bypass

Exclusion Criteria:

1. Creatin >150micromol/L
2. Liver enzymes >2 times upper limit
3. Other bariatric operations
4. Intercurrent diseases
5. Gastro-intestinal diseases
6. Psychiatric disease
7. Medicines which influences bone density
8. Pregnancy