What Causes Metallic Taste In Your Mouth?

Having a metallic taste in mouth is not a serious problem. It is estimated that metallic taste in mouth is common to everybody’s life.

Metallic taste in mouth is a type of taste disorder. The medical term for this condition is called parageusia. This irritating metallic taste can develop suddenly or over certain periods of time.

The taste bud and olfactory neurons sensory (responsible for the sense of smell) controlled the sense of taste. This shows that taste is directly related to the sense of smell which can also lead to a metallic taste in the mouth.

The working system is that the nerve endings transfer information from the taste buds and olfactory sensory neurons to the brain which help to identify the specific taste. There are numerous things which can affect this complex system and can lead to the metallic taste in the mouth.

metallic taste in the mouth

Metallic taste in mouth can sometimes indicate a serious illness, such as kidney problem or liver problem, certain cancers or diabetes. The following are some of the causes of metallic taste in mouth:

Metallic taste can be caused by certain medications or drugs. These medications include antibiotics such as clarithromycin or tetracycline, etc. The body absorbs this medicine and comes out in the saliva, it can also cause dry mouths. This can affect the taste which leads to the metallic taste because they close the taste bud.

The American Cancer Society (ACS) has declared that chemotherapy and radiation can cause a metallic taste in the mouth. “Studies suggest that certain vitamin supplements such as Vitamin D or zinc can help prevent taste distortion in people undergoing radiation therapy or chemotherapy. This may indicate that certain vitamin deficiencies could contribute to taste distortion,” According to the post published in Health Line.

The sense of taste and sense of smell are siblings, they are closely related to each other. When the sense of smell is distorted, it can have an impact on the sense of taste which can lead to the metallic taste in the mouth. For instance, Sinus or nasal passageways issues can cause abnormalities in the sense of smell and subsequently in the sense of taste, which are the common causes of metallic taste in the mouth. There are certain ways which lead to the sinus issue.

  • Sinus Infection
  • Common Cold
  • Allergies
  • Other upper respiratory infection

The CNS or the Central Nervous System is responsible for sending messages to the body parts including the message about the taste. When this CNS is disorder, it can distort the message which can result in impaired taste or metallic taste in the mouth.

According to the report taken by researchers, some pregnant women taste a metallic taste in mouth, principally early in their pregnancy. This remains unknown but some doctors or researchers argue it may be because of changes in hormone experience during the early pregnancy while others believed it might be because of increased in the sense of smell which is a symptom closely related to pregnancy. Metallic taste in mouth can also result from vitamin deficiencies, (for instance, iron deficiency) during pregnancy as well as taking prenatal vitamins.

Metallic taste in the mouth has been identified as the symptoms of some food allergies and early symptom of serious allergic reaction called anaphylactic shock. The metallic taste begins soon when you are exposed to something that you are allergic and followed by some other symptoms such as itching of mouth, face or hands, headache, sweating, etc. It may even cause serious problems such as swelling of the lips, tongue or face and may even find difficulty in swallowing and breathing. This is life-threatening.

Metallic taste in mouth can be caused by middle ear and ear tube surgery. The surgery is often performed due to the chronic ear infection or otitis media. Metallic taste in mouth happens when the chorda tympani is damaged during surgery. The chorda Tympani is s structure close to the inner ear, it controls in the rear two-thirds of the tongue.

Mouth injury or mouth surgery is also responsible for the metallic taste in the mouth because the blood in the mouth is so high in iron. Biting your tongue or removal of teeth.

Dental health or poor oral (such as gingivitis, periodontitis) can also contribute to metallic taste in the mouth.

It is believed that diabetes and low blood sugar level caused taste disturbances including metallic taste in the mouth. Metformin diabetes medicine, also likely to cause a metallic taste in the mouth.

It is also believed that kidney failure is also responsible for metallic taste in the mouth.

The neurological diseases such as Alzheimer, dementia, Parkinson diseases can also cause a metallic taste in the mouth. This is because the brain has problems interpreting signals coming from the taste bud.

Inhaling or exposure to high-level mercury or lead can often cause a metallic taste in the mouth.

Post from NHS

Cause What you can do
Gum disease Regularly brush your teeth, use dental floss, have a check-up at the dentist every 6 months
Taking medicine, like antibiotics Speak to a pharmacist for advice – don’t stop taking prescribed medicine without medical advice
Cancer treatment, like chemotherapy or radiation therapy Eat stronger tasting food, like ginger, spices and boiled sweets
Colds, sinus infections, and other airway problems The taste should go away once the problem has cleared up
Indigestion The taste should go away when you treat your indigestion
Being pregnant The taste is usually temporary and clears up by itself


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Author: Wan


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