9.Kidney Failure
Chronic kidney failure caused by nerve damage from diabetes, high blood pressure, lupus, chronic infections, or kidney diseases can lead to multiple problems in your body, like a metallic taste in your mouth.
10.Pine Mouth
Also known as pine nut syndrome, this is a rare disorder that causes an intense bitter or metallic taste after eating pine nuts. It can take 1-3 days for the metallic taste to hit, and it lasts for several weeks. It usually goes away on its own.
