Final answer:
Insulin resistance is a malfunction that can lead to symptoms like excessive thirst, urination, hunger, and blurred vision, which are characteristic of diabetes mellitus. These symptoms can be seen in both type 1 and type 2 diabetes.
Step-by-step explanation:
Insulin resistance is a malfunction in which the body's cells become less responsive to the hormone insulin. This can lead to high blood glucose levels, which are characteristic of diabetes mellitus. The symptoms mentioned in the question, such as polydipsia (excessive thirst), polyuria (excessive urination), and polyphagia (excessive hunger), are common symptoms of diabetes mellitus.
Blurred vision can also be a symptom of diabetes mellitus. The increased yeast growth mentioned in the question may be related to the elevated blood glucose levels, as yeast feeds on sugar. It's important to note that these symptoms can be seen in both type 1 and type 2 diabetes.