The goal of this observational study is to learn about the relationship between postprandial hypotension and insulin levels in adults. The main question it aims to answer is:

Is the incidence of postprandial hypotension high in patients who undergo mixed meal test?

Is insulin level higher in individuals with postprandial hypotension compared to those without during a mixed meal test?

Patients with postprandial symptoms were scheduled for a mixed meal test, during which plasma glucose, insulin, C-peptide, blood pressure, and heart rate were measured at specific time points.

Inclusion Criteria:

• Adults with postprandial symptoms

Exclusion Criteria:

• Individuals with prediabetes or diabetes,
• Those aged 65 and above,
• Patients using antihypertensive medications or with known hypertension,
• Those with active infections,
• Congestive heart failure,
• Peripheral artery disease,
• Advanced-stage dementia,
• Individuals who could not provide a history or were unable to cooperate,
• Patients using medications that could induce hypoglycemia (oral antidiabetics, insulin, beta-blockers, hydroxychloroquine, bromocriptine, etc.)
• Those with conditions that could cause hypoglycemia (uncontrolled hypothyroidism, adrenal insufficiency, growth hormone deficiency, etc.)

Patients who apply to the Endocrinology Clinic of Ankara Bilkent City Hospital.