Evidence supporting the use of: Zinc Picolinate
For the body system: Hair

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Zinc picolinate is a highly bioavailable form of zinc, an essential trace mineral with many roles in the body, including supporting hair growth and health. The scientific rationale for zinc's use in the hair body system stems from its role in cellular replication, protein synthesis (including keratin production), and maintaining the function of hair follicles. Multiple studies have shown that zinc deficiency is associated with various forms of hair loss, such as telogen effluvium and alopecia areata. Supplementation with zinc, including zinc picolinate, has been reported in some case studies and small trials to help restore hair growth in individuals who are deficient.

However, while the association between zinc deficiency and hair loss is well-established, robust clinical trials specifically evaluating the efficacy of zinc supplementation (especially zinc picolinate) for hair growth in individuals without deficiency are lacking. The evidence base is stronger for correcting deficiency-related hair loss than for general hair health in people with normal zinc status. Therefore, while there is scientific validation for zinc’s role in hair health, particularly in deficiency states, the overall evidence quality for routine supplementation in the general population is moderate.

In summary, zinc picolinate is supported by scientific evidence primarily for addressing hair loss due to zinc deficiency, with limited evidence for use in individuals with adequate zinc levels.

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