Which of the following is NOT a cause of Xerostomia in older adults?

Xerostomia, or dry mouth, is a common condition among older adults and can be caused by several factors. While it is well-known that medication side effects, autoimmune diseases, and damage to salivary glands can all contribute to this condition, overhydration does not typically cause xerostomia.

In fact, overhydration generally refers to excessive intake of fluids, which would lead to well-hydrated tissues, including the salivary glands. When the body is adequately hydrated, it is more able to produce saliva, thereby alleviating the symptoms of dry mouth. Therefore, overhydration would not hinder saliva production and is unlikely to be a cause of xerostomia.

In contrast, many medications frequently prescribed to older adults, such as antihistamines, diuretics, and certain antidepressants, can lead to reduced saliva production, resulting in dry mouth. Autoimmune diseases like Sjögren’s syndrome specifically target salivary glands, impairing saliva secretion. Additionally, damage to the salivary glands due to radiation therapy or surgical removal can also lead to xerostomia.

Overall, identifying overhydration as not being a cause of xerostomia helps clarify the relationship between fluid balance and oral health in the