Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Eurycoma longifolia, commonly known as Tongkat Ali, has a long history of traditional use in Southeast Asian herbal medicine. Traditionally, it has been employed as a tonic to enhance energy, reduce fatigue, and improve overall vitality—qualities that are often associated with supporting "adrenal health" in modern herbal terminology. However, the traditional uses do not specifically reference the adrenal glands in the sense understood by contemporary endocrinology, but rather focus on general stamina and stress resistance, which are sometimes interpreted as related to adrenal function. Scientific research on Eurycoma longifolia predominantly centers on its potential effects on testosterone levels, libido, and stress adaptation. Some studies suggest that Tongkat Ali may help modulate cortisol (a hormone produced by the adrenal glands) and reduce subjective stress in humans, but direct evidence of its impact on adrenal gland structure or function is lacking. The link to adrenal support is therefore indirect and mostly based on its adaptogenic-like properties observed in traditional use and some preliminary modern studies on stress hormones. In summary, while there is a traditional basis for using Eurycoma longifolia to support aspects of vitality and stress resilience, robust scientific validation specifically for direct adrenal support is limited. The use of this herb for adrenal health is thus primarily justified by tradition rather than strong scientific evidence.

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