Cancer treatments such as chemotherapy and radiation are vital in controlling head and neck cancers, but they can cause changes in taste and smell. These sensory changes often make it difficult for patients to enjoy food or maintain proper nutrition. Understanding these challenges and adopting the right nutritional strategies can greatly support recovery and overall well-being.
Assessing the causes of sensory changes
These taste and smell changes occur because chemotherapy and radiation affect rapidly dividing cells, including taste buds and nasal cells responsible for detecting odors. Radiation to the head and neck can also damage the oral mucosa and nerves involved in taste perception. As a result, patients may experience a complete loss of taste (ageusia), altered taste (dysgeusia), or reduced taste sensitivity (hypogeusia). Similarly, smell changes such as loss of smell (anosmia) or distorted smell (dysosmia) may occur. Some people notice a persistent metallic taste or find certain foods unpleasant.
Impact of taste changes on quality of life
A 2025 scoping review published in PubMed found that every study examining taste alterations in head and neck cancer treatment reported some level of dysfunction. This confirms that taste changes are a nearly universal side effect among these patients.
How to manage sensory changes?
For smell impairments during head and neck cancer treatment, herbs and spices can be used to enhance the flavor. Strong flavors can stimulate the taste buds. Try to use a variety of spices, herbs, marinades, and sauces to make food tastier. Use pleasant aromas in the dining environment. Essential oil diffusers in the dining area or food preparation area with pleasant scents can be used.
Hydration, along with small and regular meals, is important. Large meals may seem too much when there’s a loss of appetite. Choose nutrient-packed food and eat throughout the day, as it can help boost energy levels. Dry mouth can lead to issues in taste; stay well hydrated. You can also rinse the mouth with a baking soda solution or water before eating to clean the palate.
Taste and smell impairments in head and neck cancer patients are a challenge, but also manageable. Using sensory strategies, nutritional intake is improved along with overall recovery. Communication with the oncologists and dietitians to develop particular routines and meals helps target sensory changes in patients.