Can venous insufficiency affect your brain?

Can venous insufficiency affect your brain? Venous insufficiency typically refers to chronic venous insufficiency in legs where leg veins have faulty valves causing blood pooling, and it does not directly affect brain, as brain has separate venous drainage system, and leg venous insufficiency does not cause brain venous insufficiency. However, there is condition called cerebral venous insufficiency or cerebral venous sinus thrombosis where brain veins have issues, but that is different condition, not caused by leg venous insufficiency. Leg venous insufficiency does not affect brain function directly, but severe systemic factors like clotting disorders may affect both. Chronic venous insufficiency can affect quality of life, sleep, and mobility, indirectly affecting mental health, but not brain venous drainage. So leg venous insufficiency does not affect brain, brain has own venous system, though general poor circulation or heart failure may affect both, but leg venous reflux alone does not impact brain health or cause brain damage.