Evangeline Lilly Reveals Brain Damage Diagnosis Following Severe Beach Accident

For much of her life, Lilly and her doctors believed these spells were caused by hypoglycemia, or low blood sugar. She previously noted that this explanation seemed to fit her high metabolism and the way her body processes sugar. However, as she grew older and underwent more rigorous testing, medical professionals ruled out low blood sugar, leaving the actual trigger for her fainting episodes unknown and requiring further investigation.