9. Dry Mouth and Dehydration
Although dry mouth and dehydration are two very different conditions, they can both result in a metallic taste in the mouth. Dehydration is easily rectified by drinking sufficient water. Health authorities recommend a minimum of eight glasses a day. Dry mouth can have a number of causes, ranging from something as simple as dehydration to more serious causes, including certain diseases, such as HIV/AIDS, Alzheimer’s and strokes. The use of tobacco and methamphetamines (meth mouth) and numerous medications can also cause a dry mouth. In most cases drinking enough water daily can help relieve the condition.