Thanks for asking the query,
Loss of taste sensation can be due to plenty of reasons like Gastric refux disease,
Poor oral hygiene , Mouth infection abscesses , Mouth ulcers , infection of Sinuses
Salivary gland infection , Tobocco use , in some patients with radiation
therapy and some medicines .
Loss of taste can also be because of Vitamin B12 deficiency, Glossitis
Get complete physical examination done to rule out the causes.
Take vitamin suplements .
habit if present , as long term smokers can suffer from sensory loss including taste and smell.
Drink plenty of water , if you are suffering from dehydration
or dry mouth .
Avoid eating hot food and beverages .
Maintain a good oral hygiene .
Get complete physical and dental examination done to rule out medical or dental reasons for the loss of taste .
Hope this helps out .