Synopsis

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

Ketosterones, primarily derived from the plant Eurycoma longifolia (commonly known as Tongkat Ali or Longjack), are traditionally used in Southeast Asian herbal medicine. The root extracts, which are rich in eurycomanone and related ketosteroids, have been used to combat fatigue and improve vitality. Historical records and ethnobotanical surveys indicate that local populations have employed Tongkat Ali preparations as a general tonic for enhancing energy, physical strength, and endurance, particularly in men. This traditional use is rooted in centuries of anecdotal evidence rather than rigorous scientific validation.

Scientifically, there is limited direct evidence linking ketosterones specifically to increased energy levels or the treatment of fatigue in humans. Most clinical studies on Eurycoma longifolia focus on its potential roles in testosterone enhancement, libido, and stress reduction, with only a few small-scale studies reporting possible improvements in well-being or self-reported energy. These effects may be secondary to hormonal changes rather than a direct energizing property. Overall, the evidence supporting its use for energy is considered weak and largely based on traditional use rather than robust clinical research.

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