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Research Citations Jastreboff, A
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Vitamin D3 (2000-5000 IU daily): Vitamin D deficiency is widespread, affecting an estimated 35-40% of American adults
A peer-reviewed study in the Journal of Clinical Endocrinology and Metabolism by Prinz and colleagues demonstrating that acute alcohol intake produces a significant suppression of nocturnal growth hormone secretion alongside reduced slow-wave sleep has been the foundational reference for this effect for decades, and the relationship has been replicated in newer literature on adult sleep architecture
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