2. Cancer Therapy

Chemotherapy can damage the salivary glands and thereby affects the amount of saliva the body produces. In addition, chemotherapy also makes the saliva thicker, further creating the feeling of dry mouth. Damage primarily stems from harsh therapeutic radiation directed to the neck and head during the treatments. Most people who experience dry mouth for this reason should find the symptom passes once chemotherapy is complete, as long as the cancer has not directly affected the mouth.

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