Evidence supporting the use of: Horsetail
For the health condition: Osteoporosis

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Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Horsetail (Equisetum arvense) has a long history of use in traditional herbal medicine, particularly in Europe, where it has been valued for its diuretic and purported bone-strengthening properties. The rationale for its use in supporting or treating osteoporosis is primarily based on its high silica content, as silica is thought to play a role in bone formation and health. Historical texts and folk practices suggest horsetail tea or extracts were consumed to "strengthen bones," particularly in elderly populations or individuals with bone weakness.

However, the scientific evidence supporting horsetail's efficacy for osteoporosis is limited and mostly preclinical. Some in vitro and animal studies suggest that silica may stimulate osteoblast activity (bone-forming cells) and enhance collagen synthesis, but these findings have not been robustly demonstrated in well-designed human clinical trials. A few small studies and case reports indicate potential benefits, but the evidence is weak and insufficient for medical recommendation.

In summary, horsetail's use for osteoporosis is justified by tradition rather than solid scientific validation. Anyone considering horsetail supplements should be aware of possible toxicity (especially if not properly prepared), interactions, and lack of proven effectiveness for osteoporosis in humans.

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