Synopsis

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

Lotus (Nelumbo nucifera) has been used in traditional medicine systems, particularly in Traditional Chinese Medicine (TCM) and Ayurveda, to support cardiovascular health and address "heart weakness"—a term that may encompass fatigue, palpitations, or general debility related to the heart. In these traditions, various parts of the lotus plant, including the seeds, leaves, and rhizomes, are believed to "nourish the heart," calm the spirit, and improve circulation. However, the historical evidence is largely based on anecdotal reports and centuries-old herbal texts rather than systematic clinical observations. While some animal studies and in vitro experiments suggest that lotus extracts may have vasorelaxant, antioxidant, or anti-inflammatory properties, robust clinical evidence in humans for the treatment or support of true cardiac weakness or heart failure is lacking. The rating of 1 reflects that the use of lotus for heart weakness is primarily grounded in traditional use with very limited modern scientific validation. Most references to its use in this context are found in ethnobotanical surveys and traditional pharmacopeias rather than peer-reviewed clinical trials.

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