What causes tinny taste in mouth?

A tinny taste in the mouth can be caused by several factors, including dental issues such as gum disease or tooth decay, which can lead to metal ions being released. Certain medications, particularly those that affect taste or cause dry mouth, may also contribute to this sensation. Additionally, vitamin deficiencies, especially in B vitamins or zinc, can alter taste perception. Other potential causes include exposure to metal substances or underlying health conditions like acid reflux or sinus infections.