There are many factors that have been implicated in altered taste sensation in the oral cavity.
Metabolic and endocrine diseases were proposed as causative factors for this disturbance;
nevertheless, salivary dysfunction can contribute to altered taste sensation or elevation of detection thresholds
Taste dysfunction has been reported to occur more frequently in patients with poorly controlled diabetes compared to healthy controls. Diabetic patients who suffer from neuropathy have a higher taste threshold. Taste disturbance has also been reported to lead to poor glycaemic control by inhibiting the ability to maintain a good diet