Low levels of vitamin D have been associated with low mood and behavioral difficulties in children, and psychological difficulties, such as feelings of anxiety, in adults
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Substances and methods prohibited at all times
Side Effects and Safety Considerations Common: Mild injection site redness (resolves within an hour), transient fatigue during the first one to two days of use, and occasional light headache
Claim Strength Matrix for Skin, Hair, and Healing Claims Skin aging claims are moderate when limited to topical cosmetic outcomes, wound-healing claims are context-dependent because evidence includes both human diabetic-ulcer research and animal models, and hair growth claims remain preliminary or indirect [2], [3], [6], [13]
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