Sleep, nutrition, exercise, hormonal changes, vitamin or iron deficiencies, thyroid function, medications, and metabolic health can all influence mood, energy, concentration, and cognition. When the history suggests a medical contributor, Dr. Rao may recommend appropriate lab testing or coordinate with a primary care physician or specialist. She's frequently asked about functional-medicine testing, extensive nutritional panels, hormone testing, and brain-imaging based diagnostics — some may be useful in carefully selected circumstances, but more testing is not necessarily better testing. Brain scans like MRI, CT, PET, and SPECT have important medical uses, but a 2024 review concluded that, outside limited circumstances, imaging has not demonstrated the accuracy needed to diagnose psychiatric disorders or guide individual treatment. Dr. Rao's approach stays integrative but evidence-conscious — every recommendation must have credible scientific support and a reasonable likelihood of improving care, never simply because it's profitable or trendy.