International GLUT1 Awareness Day is observed worldwide every July 10 to promote understanding of GLUT1 deficiency syndrome, a rare genetic neurological disorder caused by a deficiency of the GLUT1 protein that transports glucose across the blood-brain barrier. This day was established by the GLUT1 Deficiency Foundation (G1DF), a patient advocacy organization that supports individuals with GLUT1 deficiency and their families through education, advocacy, and research funding. The day aims to educate families, health professionals, and the public about the disorder, which can lead to symptoms such as seizures, developmental delays, and cognitive impairment. It highlights the importance of early diagnosis and the necessity of a lifelong ketogenic diet as the standard treatment for managing the condition.