Abstract
BackgroundMedicinal properties of the food species are one of the poorly documented and important areas of ethnopharmacology. The present survey quantitatively documented the medicinal foods prescribed by the non-institutionally trained siddha practitioners of Tiruvallur district of Tamil Nadu.MethodsField work was carried out between December 2014 and April 2017 using a questionnaire. The illnesses mentioned by the informants were grouped as illness categories on the basis of emic perceptions. Sufficiency of sampling of this survey was assessed by plotting the cumulative number of UR and Shannon-Wiener’s index. The indices such as informant consensus factor (FIC), Index of Agreement on Remedies (IAR), and Cultural Food Significance Index (CFSI) were calculated.ResultsThis study documented 165 medicinal foods used by 82 non-institutionally trained siddha practitioners of Tiruvallur district, and 73.93% of these preparations were plant based. Among the animal taxa, 82.05% were represented by fish taxa. The illness category gastrointestinal ailments is the majorly cited illness category treated with plant-based formulations. The illness categories viz., gastrointestinal ailments, hemorrhoids, and neural ailments had high consensus under the group of plant-based medicinal foods. In animal-based medicinal foods, kapha ailments had gained 23.07% of UR. The illness categories such as bone fractures, male reproductive ailments, blood ailments, and anabolic had high FIC values.ConclusionsDeeper studies on different dietary cultures of India may help to derive better interpretations on food-medicine continuum. This study identified some important claims such as the use of citron, pomegranate and Solanum americanum (gastrointestinal ailments), Abutilon indicum, onions and elephant foot yam (hemorrhoids), Boerhavia diffusa (urinary ailments), Moringa oleifera (anemia), Aloe vera (gynecological ailments), Eclipta prostrata (liver ailments), ivy gourd (diabetes), citron (hypertension), Centella asiatica (psychological ailments), spade nose shark (lactogogue), reticulate whipray (wheezing and bronchitis), Katelysia opima (impotence), Indian squid (anemia), and Indian oil sardine (anabolic). More studies on these claims will help identify novel functional foods to add to the field of medical nutrition therapy, with traditional brand identity. Robust studies on the documentation of the traditional knowledge on marine resources will yield a good database for various stakeholders and policy makers.
Highlights
Medicinal properties of the food species are one of the poorly documented and important areas of ethnopharmacology
47% of the total human workforce deals with agriculture; this district is one of the fastest developing districts of Tamil Nadu in Interviews The local knowledge of non-institutionally trained siddha practitioners on medicinal foods was documented between December 2014 and April 2017 using a questionnaire
This study focused on the local knowledge of siddha practitioners who learnt only through traditional methods of teaching, practicing for a minimum of 5 years, and willing to share their knowledge
Summary
Medicinal properties of the food species are one of the poorly documented and important areas of ethnopharmacology. Ethnopharmacological surveys showed that the local people who gathered various wild species for food had knowledge about the health benefits of those species [2]. These health benefits go beyond from nutritional perspectives to health promoting phytochemicals [3] and many of them have been consumed by healthy people as a prophylactic measure. Many studies focused either on the dietary or pharmacological properties of the species and only limited studies addressed this food-medicine continuum [8]
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