PubMed
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Threshold effect of serum 25-hydroxyvitamin D on Anemia risk in U.S. adults aged 45 years and older.
While previous studies have reported conflicting linear or U-shaped associations between vitamin D and anemia, evidence regarding the specific dose-response relationship in middle-aged and older adults remains limited. This study aimed to identify the threshold effect of serum 25-hydroxyvitamin D [2
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