The question “Why am I so tired?” is one of the most common complaints heard by doctors today. A leading physician suggests that for many, the answer isn’t complex—it’s a straightforward deficiency in Vitamin D.
This nutrient’s connection to energy is rooted in its hormonal function. It helps regulate a wide array of genes, including those involved in cellular energy production. When levels are low, this entire system can become sluggish, leading to a pervasive sense of fatigue that sleep alone can’t fix.
The problem is that this deficiency is notoriously “silent.” Its main symptom, fatigue, is so ubiquitous in modern life that it’s rarely investigated as a sign of a nutritional issue. It’s often dismissed as stress or lack of sleep.
Moreover, trying to eat your way out of exhaustion is unlikely to work in this case. The expert points out that food sources of Vitamin D are limited, making it very difficult to consume enough to overcome a deficiency and restore your energy.
The most effective treatment is also the simplest. The doctor advises a daily regimen of 10 to 30 minutes of midday sun. This can stimulate the production of 1,000 to 2,000 IU of Vitamin D, which can help replenish your energy at a cellular level and answer that lingering question of why you’re so tired.
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