You wake up tired. You spend the day on the edge. You arrive at night exhausted but have trouble falling asleep. And the next day, it all starts again. This cycle is more common than it seems, and more treatable than you might imagine. What is behind persistent fatigue? The most frequent causes in women aged 25 to 45 are: nutritional deficiencies (iron, vitamin D, B12 and magnesium), alterations in thyroid function, hormonal imbalance, intestinal dysbiosis, non-restorative sl