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A deficiency in Vitamin B12 can lead to fatigue and decreased energy, as your body struggles to deliver adequate oxygen to your cells
According to Harvard Health, B12 deficiency can be sneaky and harmful often developing silently over years before symptoms become apparent
If digestive disease is suspected, doctors may recommend further work-up and, when appropriate, procedures such as endoscopy to assess the upper digestive tract
Next, the doctor will mark out your treatment area, make a few small numbing injections, create the small entry points, and begin the actual procedure
Vitamin D : Adults typically need 15 mcg (600 IU) per day, while those over 70 require 20 mcg (800 IU)