Hi . Thank you for asking your question on Just Answer.
When a person has loss of taste sensation, then in medical terms it is called as ageusia .The common cause for this condition are-deficiency of vitamins B3 and Zinc, disease condition Hypothyroidism and Diabetes Mellitus. Other causes are-tobacco abuse, Anxiety Disorder, liver disease. Also neurological condition like damage of lingual nerve or glossopharyngeal nerve causes these symptoms. As such my opinion is that you should see Physician, so that tests are done, cause is evaluated , and is managed. Thank you again for trusting us with your problem.