By Dr. Priyom Bose, Ph.D. Reviewed by Lauren Hardaker Jul 30 2025 A new review uncovers why dangerous vitamin deficiencies, from vision loss to life-threatening complications, are harming patients years after weight loss surgery, and how better follow-up could save lives. Study:  Nutritional Deficiencies Following Bariatric Surgery: A Rapid Systematic Review of Case Reports of Vitamin and Micronutrient Deficiencies Presenting More Than Two Years Post-Surgery . Image credit: New Africa/