For people with dietary restrictions or impaired taste sensation, the experience of tasting food and beverages isn't enjoyable. To make it more tolerable, many times additives and additional chemicals are added to improve flavour, however, those can become harmful and dangerous.
The number one complaint at senior care facilities is “this food has no taste”. One way to add taste is to add salt. But for some people that have dietary restrictions because of medical conditions like cardiovascular disease, (heart failure, high blood pressure and pulmonary hypertension), this excess sodium intake poses an immediate threat to their health.
Medications for xerostomia (common in radiation therapy patients treated for head and neck cancers), such as pilocarpine and cevimeline, can cause side effects like increase of tears, excess sweating, nausea, dizziness, diarrhea, blurred vision, body odour, and mucous membrane abnormality. They can be dangerous in people with cardiovascular and pulmonary disease.