After undergoing gastric bypass, vitamins might be something that your doctor recommends. Why are these necessary?

After you've had gastric bypass, vitamins are a way to restore the balance in your body. When you've decreased the size of your stomach, you've decreased the amount of vitamins that you can take in, so you need to replenish this disparity until your body adjusts. In time, your body adapts to the new way of digesting and fueling itself, but in the beginning, vitamins can help level the differences.

When you've had gastric bypass, vitamins can also head off other side effects of the surgery. In some cases, they can help with hair loss or skin problems associated with the lowered levels of nutrients because of the smaller portions of food that are going through your system.