Tag Archives: indigenous people

Medicinal Plants Used for the Treatment of Diarrhea in Ethiopia

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Medicinal Plants Used for Treatment of Diarrhoeal Related Diseases in Ethiopia

Woldeab B, Regassa R, Alemu T, Megersa M
Evid Based Complement Alternat Med. 2018 Mar 18;2018
PubMed Central PMCID: PMC5878875

Investigators from Jimma University and Hawassa College of Teacher Education conducted an inventory of plant species used in the treatment of diarrheal diseases by indigenous people of Ethiopia.

Writing in Evidence-based Complementary and Alternative Medicine, the authors note that the World Health Organization has initiated a diarrhea disease control program to study traditional medicine practices and prevention approaches to the condition. Diarrhea is a leading killer of children, accounting for 9 percent of all deaths among children under age of five worldwide, with Sub-Saharan Africa having one of the highest child death rates due to diarrhea.

Allopathic study of antidiarrheal properties of medicinal plants used in Ethiopian traditional medicine is in early stages:

“Although there are a range of medicinal plants with antidiarrhoeal properties that have been widely used by local communities of Ethiopia, the effectiveness of many of these antidiarrhoeal traditional medicines has not been scientifically evaluated. Recently, a few of these medicinal plants have attracted considerable attention and studies being conducted to scientifically evaluate their antidiarrhoeal activities.”

The team recorded 132 plant species used to treat diarrheal diseases in Ethiopia, based on a review of studies published between 1965 and 2017.

Citrus limon
Citrus limon [Photo: WAH]
Among the most commonly used plants were Amaranthus caudatus, Brucea antidysenterica, Calpurnia aurea, Citrus limon, Coffea arabica, Cordia africana, Indigofera spicata, Lepidium sativum, Leucas deflexa, Rumex nepalensis, Stereospermum kunthianum, Syzygium guineense, Verbascum sinaiticum, Verbena officinalis, Vernonia amygdalina, and Zehneria scabra.

Most of the remedies were prepared from fresh parts of the medicinal plants, followed by dried forms, and a smaller group prepared either from dry or fresh plant parts. Additives like honey, salt, sugar, beer, milk, and butter were used to help make the plants suitable for oral administration.

The authors note that sufficient studies have not been conducted in the Afar, Benishangul Gumuz, Gambella, and Somali regions for the inventory to be considered complete.

Read the complete article at PubMed Central.

Send email to avery@williamaveryhudson.com for information about submitting qualified published research for sponsored posts on this blog.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Medicinal Plants Used by Saraguro Community Healers in Ecuador

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Ethnobotany of Indigenous Saraguros: Medicinal Plants Used by Community Healers “Hampiyachakkuna” in the San Lucas Parish, Southern Ecuador

Andrade JM, Lucero Mosquera H, Armijos C
Biomed Res Int. Epub 2017 Jul 4
PubMed Central PMCID: PMC5514338

Investigators at the Universidad Técnica Particular de Loja (UTPL) conducted an ethnobotanical survey of the use of medicinal plants by community healers known as Hampiyachakkuna by the indigenous Saraguro people living in San Lucas Parish, Loja Province, Ecuador.

Writing in Biomed Research International, the authors note that this ethnobotanical knowledge is endangered by cultural changes:

“The community of healers locally known as ‘Hampiyachakkuna’ maintains the ancient medical treatments of the Saraguros. The ‘Yachak’ or ‘Hampi yachakkuna’ is the person who knows the curative properties of plants, animals, and/or minerals. Under the Andean cosmovision of the Saraguros ethnical group, the diseases they treat are thought to be produced by either cold or heat. As such, their natural medicines are classified as hot and fresh; and depending on the nature of the patient’s condition, different plants are selected for the treatment in accordance with this classification. However, although the knowledge regarding the usage of plants for medicinal practices has been transmitted orally from generation to generation, the Saraguros are experimenting cultural changes that threaten the preservation of their ancestral knowledge. These cultural changes lead to negative consequences such as the loss of traditional knowledge, a decline in the use of natural resources, and changes in the patterns of food intake, medical treatment, and, furthermore, their cosmovision. For these reasons, there is an urgent need to document and preserve their invaluable knowledge.”

Working with four healers from the Saraguro community – a Wachakhampiyachak (midwife), a Yurakhampiyachak (herbalist), a Kakuyhampiyachak (bone-healer), and a Rikuyhampiyachak (visionary) – the team documented 183 plant species used in 75 different curative therapies. Uses included mythological treatments, nervous system treatments, cold treatments, infection treatments, general malaise treatments, and inflammatory treatments of the liver and kidneys.

Siphocampylus scandens
Siphocampylus scandens [Photo: Dick Culbert, Wikimedia Commons]
Endemic medicinal species identified included Achyrocline hallii, Ageratina dendroides, Bejaria subsessilis, Brachyotum scandens, Dendrophthora fastigiata, Diplostephium juniperinum, Diplostephium oblanceolatum, Fuchsia hypoleuca, Huperzia austroecuadorica, Lepechinia paniculata, Phoradendron parietarioides, Siphocampylus scandens, and Salvia leucocephala. Most of the endemic plants in the group were determined to be in danger, threatened, or vulnerable.

The study was conducted under a technical and scientific collaborative effort of the UTPL, the Dirección Provincial de Salud de Loja, and the Consejo de Sanadores de Saraguro “with the objective of recognizing and recovering the traditional knowledge of herbal medicinal resources used by the Saraguro community”:

“Because of the increasing recognition of the importance of the different medicinal species used by the Saraguros and in an effort to preserve their knowledge, in this work we seek to contribute to the conservation strategy on the sustainable uses of the Ecuadorian medicinal biodiversity. The latter is considered a fundamental step in order to raise awareness of its cultural value and the importance of its preservation. By doing that, we intended to safeguard the popular knowledge concerning natural medicinal plants and to provide a baseline for future actions regarding scientific research programs, environmental education, social awareness, and sustainable natural resources exploitation…. The results of this research also aim at becoming a starting point to attract the attention of national and international tourists, in order to promote a self-sustaining development of the Saraguro community.”

Read the complete article at PubMed Central.

Send email to avery@williamaveryhudson.com for information about submitting qualified published research for sponsored posts on this blog.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Ethnomedicinal Plants Used by Traditional Healers of Three Indigenous Communities in the Bandarban District of Bangladesh

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Quantitative Ethnobotany of Medicinal Plants Used by Indigenous Communities in the Bandarban District of Bangladesh

Faruque MO, Uddin SB, Barlow JW, Hu S, Dong S, Cai Q, Li X, Hu X
Front Pharmacol. 2018 Feb 6;9:40
PubMed Central PMCID: PMC5808248

Investigators at Huazhong Agricultural University, University of Chittagong, Royal College of Surgeons in Ireland, and Hubei Cancer Hospital documented information on ethnomedicinal plants used by traditional healers of three indigenous communities in the Bandarban, a hilly, primarily agricultural district in southeastern Bangladesh.

The team chose three Bandarban district upazilas (administration regions) for the study (Naikhyonchari, Rowangchari, and Ruma) as their distance from cities make them some of the most remote areas of Bangladesh. Of the twelve indigenous communities, three (Chakma, Marma, and Tripura) are reported to employ ethnomedicinal herbal practices particularly heavily and were asked to participate in the interviews.

A total of 159 ethnomedicinal plant species, 128 of them native, were reported to be useful for therapeutic purposes including the treatment of gastrointestinal disorders, as a sedative, for anti-tumor, anti-allergic, or carminative activity, for coughs and colds, and for boils and other skin ailments.

Congea tomentosa
Congea tomentosa [photo: Forest & Kim Starr, Wikimedia Commons]
The five most commonly used ethnomedicinal plant species were Duabanga grandiflora, Zingiber officinale, Congea tomentosa, Matricaria chamomilla, and Engelhardtia spicata. To the best of the authors’ knowledge, seven of the species documented in the study have never before been ethnobotanically and pharmacologically studied in Western scientific literature: Agastache urticifolia, Asarum cordifolium, Congea tomentosa, Engelhardia spicata, Hypserpa nitida, Merremia vitifolia, and Smilax odoratissima.

In their conclusion, the authors recommend a closer look at C. tomentosa and E. spicata in particular:

The present study showed that traditional treatment systems using medicinal plants is still prevalent in the studied areas, and it underlines the importance in the documentation of traditional ethnomedicinal knowledge before losing this diverse resource. To the best of our knowledge, this is the first quantitative ethnomedicinal study in the study area indicating UV, ICF, FC, RFC, RI, and JI indices. The present study records new ethnomedicinal species with their therapeutic uses, which can potentially lead to the development of new therapies and may represent novel bioresources for phytochemical and pharmacological studies, notably C. tomentosa and E. spicata, which have claimed anticancer effects by the healers of all studied indigenous communities in the study area.

Read the complete article at PubMed Central.

Send email to avery@williamaveryhudson.com for information about submitting qualified published research for sponsored posts on this blog.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Medicinal Plants Used by Balti People in Pakistan’s Shigar Valley

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Medicinal plants used by inhabitants of the Shigar Valley, Baltistan region of Karakorum range-Pakistan

Abbas Z, Khan SM, Alam J, Khan SW, Abbasi AM
J Ethnobiol Ethnomed. 2017 Sep 25;13(1):53
PubMed Central PMCID: PMC5613401

Skardu, Shigar Valley, Pakistan
Skardu, Shigar Valley, Pakistan [Photo: Rizwan Saeed, Wikimedia Commons]
Investigators at Hazara University, Quaid-i-Azam University, Karakoram International University, and COMSATS conducted an ethnobotanical study to document medicinal uses of plant species by the inhabitants of the Shigar Valley in the Karakorum Range of Northern Pakistan. This is the first such study in the region, which is home to ethnic Balti people of Tibetan descent:

“Baltistan is an archetypal mountainous region of the Northern Pakistan with average altitude of 3555 m above sea level. Historically, it has often been referred as “Western Tibet” or ‘Little Tibet’. The territories of the Baltistan region lie sparsely at acclivities and in deep mountains of Karakorum and Himalaya with unique landscape, climate, flora and fauna. However, remoteness, difficult access and inadequate funding may be the major handicaps to conduct field survey in these areas. Only few workers have conducted ethnobotanical survey in some parts of Northern Pakistan. Therefore, very limited ethno-botanical literature is available in the region. Shigar valley is located in the Karakorum Ranges, and is the home of various peaks (including K2), glaciers and hot springs, which have always been the most preferred tracking places for visitors across the country and abroad. Ethno-botany is a recently introduced and rapidly flourishing field in this region, and is gaining adequate attention by researchers. Although, various ethnobotanical surveys have be conducted in different parts of Pakistan. However, Northern parts of country are still poorly explored. Therefore, present survey aimed to provide the first inventory on ethno-pharmacological application of medicinal plant species used by the inhabitants of Balti community of Shigar valley, Karakorum Mountains-Pakistan.”

Allium carolinianum
Allium carolinianum [Photo: Sherpaworld, Wikimedia Commons]
Working with local respondents, the team identified 84 medicinal plant species used primarily to treat abdominal, respiratory, and skin ailments. Commonly used plants included Allium carolinianum, Hippophe rhamnoides, Tanacetum falconeri, and Thymus linearis. Roughly a quarter of the species were identified for medicinal uses for the first time and included Aconitum violoceum, Arnebia guttata, Biebersteinia odora, Clematis alpina, Corydalis adiantifolia, Hedysarum falconeri, and Saussurea simpsoniana.

The authors found the results to be significant for scientific purposes, as well as for conservation and cultural/economic development:

“Present study illustrated diverse medicinal flora in the territories of Gilgit-Baltistan mountains. The exclusive alliance of medicinal plants, mountain restricted distribution and high level disagreement in traditional uses corroborate the significance of this study. Being the first inventory on medicinal flora of Shigar valley, present study offers baseline data for researchers, particularly interested in high mountains phyto-diversity and related traditional knowledge. The sub-alpine species in environs are practicable for conservation and cultivation. The abundance of medicinal plant species in the study area could enhance the economic status of local communities by marketing and sustainable utilization. Local inhabitants can make their home gardens or micro park system of medicinally important species on their own land.”

Read the complete article at PubMed Central.

Send email to avery@williamaveryhudson.com for information about submitting qualified published research for sponsored posts on this blog.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Medicinal Plants Used as Insect Repellents in Malaria-Endemic Localities of Cameroon

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Ethnobotanical survey of medicinal plants used as insects repellents in six malaria endemic localities of Cameroon

Youmsi RDF, Fokou PVT, Menkem EZ, Bakarnga-Via I, Keumoe R, Nana V, Boyom FF
J Ethnobiol Ethnomed. 2017 Jun 8;13(1):3
PubMed Central PMCID: PMC5465592

Investigators from the University of Yaoundé, University of Adam Barka-Abeche, and National Herbarium of Cameroon conducted an ethnobotanical survey of medicinal plants used as insect repellents in six malaria-endemic localities of Cameroon: Lolodorf, Bipindi, Kribi-Londji, Dimako, Kon-Yambetta, and Mbouda (Babete). The inhabitants of these regions include Bagyeli, Bakola, and Baka pygmies, among others.

Citrus limon
Citrus limon [Photo: WAH]
Working with 182 local informants, the team identified 16 plant species commonly used as insect repellents, including Canarium schweinfurthii, Chromolaena odorata, Citrus limon, and Elaeis guineensis. Important modes of administration included plants burnt to produce smoke inside the house (50%), smashed for topical application (31%), and hung inside the house (19%).

The authors concluded that the results have baseline potential for further scientific investigation of plant-based mosquito repellents, while urging caution regarding the use of one plant, Erythrophleum ivorense:

“[T]he insecticidal activity of the bark extract of Erythrophleum ivorense was previously reported in the Ashanti region of Ghana. Besides, Erythrophleum ivorense is resistant to fungi, dry wood borers and termites. This denotes repellency/insecticidal properties that might be explained by the presence of pharmacologically active alkaloids in the bark and seed such as cassaine, cassaidine and erythrophleguine. However, it should be noted that high doses of the bark extract are extremely strong, rapid-acting cardiac poison in warm-blooded animals causing shortness of breath, seizures and cardiac arrest in a few minutes. Furthermore, the seeds are reported to be more toxic due to a strong haemolytic saponin which acts synergistically with the alkaloids. Fresh bark of this plant was reported to be burnt by Mbamda (Bafia) people to repel in-house mosquitoes. Given the presence of toxic alkaloids in the bark, the resulting smokes are highly likely to be equally poisonous to insects and human, stressing the fact that it should be used with caution or simply discontinued.”

Read the complete article at PubMed Central.

Send email to avery@williamaveryhudson.com for information about submitting qualified published research for sponsored posts on this blog.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Ethnobotanical Use of Medicinal Plants in Sheikhupura District, Punjab, Pakistan

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An ethnopharmacological evaluation of Navapind and Shahpur Virkanin district Sheikupura, Pakistan for their herbal medicines

Zahoor M, Yousaf Z, Aqsa T, Haroon M, Saleh N, Aftab A, Javed S, Qadeer M, Ramazan H
J Ethnobiol Ethnomed. 2017 May 8;13(1):27
PubMed Central PMCID: PMC5422909

Punjab Province, Pakistan
Punjab Province, Pakistan [Source: TUBS, Wikimedia Commons]
Investigators from the Lahore College for Women University conducted an ethnopharmacological survey to document the medicinal uses of wild plants in the villages of Nava Pind and Shahpur Virkanin in the Sheikhupura district of Punjab province in eastern Pakistan. This is the first quantitative ethnobotanical documentation of medicinal plants to be undertaken in the region.

“The village[s] NavaPind and ShahpurVirkan [of the] district Sheikhupura are floristically quite rich tropical regions of Punjab. Ethnobotanical study of this area has never been conducted. The climate of the area is subjected to extreme variations. Wheat, Rice and Sugarcane are the main cash crops. Guavas, Strawberries and Citrus are grown at a larger scale in this district. Literacy rate of the villages is very low. Generally it is observed that most men in these areas are engaged in unskilled labor, while women are self-employed in petty trade of agriculture especially in the collection and trade of wild food and medicinal plants. Mostly plants are used for many purposes like food, shelter and therapeutic agents. However, lack of scientific knowledge about the useable parts, proper time of collection and wasteful methods of collection lead to mismanagement of these plants. So, the indigenous knowledge is going to be depleted. Hence ethnobotanical survey is planned for NavaPind and ShahpurVirkan district Sheikhupura, province Punjab to document the traditional uses of medicinal plants in the area before the information is lost.”

Ocimum sanctum
Ocimum sanctum [Photo: WAH]
Working with indigenous local informants, the team identified 96 plant species used for medicinal purposes, including 12 species that had not been previously reported for medicinal properties: Allium roylei, Asthenatherum forkalii, Carthamus tinctorius, Conyza erigeron, Digitaria ciliaris, Digitaria nodosa, Jasminum nudiflorum, Malva verticillata, Melilotus indica [Melilotus indicus], Ocimum sanctum, Schoenoplectus supinus, and Tetrapogon tenellus. Therapeutic applications included abdominal pain, respiratory disorder, cholera, and use as a skin tonic, among others.

Read the complete article at PubMed Central.

Send email to avery@williamaveryhudson.com for information about submitting qualified published research for sponsored posts on this blog.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Review of Traditional Medicinal Plants Used to Treat Malaria in Ethiopia

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Systematic review on traditional medicinal plants used for the treatment of malaria in Ethiopia: trends and perspectives

Alebie G, Urga B, Worku A
Malar J. 2017 Aug 1;16(1):307
PubMed Central PMCID: PMC5540187

Investigators at Jigjiga University conducted a systematic web search analysis and review of research literature pertaining to medicinal plants used for traditional malaria treatment in Ethiopia.

Writing in Malaria Journal, the authors note that antimalarial ethnomedicinal research in Ethiopia remains limited:

“Despite the remarkable historic success of traditional medicinal practices and abundance of indigenous medicinal plant resources, anti-malarial ethno-pharmacological research in Ethiopia remains at primitive stage, with scope limited to evaluating crude extracts from various anti-malarial plants against Plasmodium berghei. A prominent gap is evident with regard to research geared towards identifying plant bioactive entities, and establishing the efficacy and safety of medical plants through in vitro assays using human Plasmodium parasites, in vivo assay involving higher animal models and randomized clinical trials. Absence of favourable medicinal plant research and development impedes optimum exploitation of potential economic benefits. Thus, despite holding one of the richest (diversity and quantity) resources in the continent, large-scale production and export of medicinal plants has remained limited in Ethiopia. Prevailing scenarios underscore a pressing need for enhancing pre-clinical and clinical research aimed at developing safe, effective and affordable alternative anti-malarial agents from indigenous plant resources. This requires collaborative engagement involving government bodies, researchers, traditional healers, and prospective business investors.”

Tamarindus indica
Tamarindus indica [Photo: WAH]
Collecting data from 82 studies identifying a total 200 different plant species used in traditional malaria treatments throughout Ethiopia, the team highlighted a rich diversity of indigenous medicinal plants commonly used for traditional treatment of malaria in Ethiopia. The most frequently cited species included Allium sativum, Carica papaya, Vernonia amygdalina, Croton macrostachyus, Lepidium sativum, Justicia schimperiana, Phytolacca dodecandra, Dodonaea angustifolia, Melia azedarach, Clerodendrum myricoides, Aloe sp., Azadirachta indica, Brucea antidysenteric, Calpurnia aurea, Eucalyptus globulus, Ajuga integrifolia, Carissa spinarum, Artemisia afra, Moringa stenopetala, Ruta chalepensis, Salvadora persica, and Tamarindus indica.

Decoction, concoction, eating/chewing, infusion, and pounding represented the most common methods of preparation. Some of the medicinal products were prepared from mixtures of two or more different plant species and various other additives were also used in some of the treatments:

“Additives were mostly used to moderate the power and/or improve the taste and enhance the efficacy and healing conditions of the remedy. This could possibly be attributed to synergistic effects of the mixtures that might contain a range of pharmacologically active compounds potentially augmenting the chance of the drug interacting with numerous, varied biological targets. Their interaction might influence selectivity, availability, absorption and displacement (distribution) of the remedy, and bioactivity, including enzyme activities. Thus, such traditional practices could provide the opportunity to understand drug interaction and mechanisms of actions, and pave the way to discovering lead structures for the development of novel anti-malarial drugs.”

Many of the species identified in the study have previously demonstrated promising antimalarial potential in preclinical and clinical investigations, among them Artemisia annua, Ajuga remota, Azadirachta indica, Argemone mexicana, Vernonia amygdalina, Asparagus africanus, Uvaria leptocladon, and Gossypium spp. In addition, promising candidate antimalarial compounds have been identified from some of the plants.

In their conclusion, the authors recommend coordinated multidisciplinary research to further develop the therapeutic potential of anti-malarial compounds from plant species used for the treatment of malaria in Ethiopia:

“Ethno-medicinal research on distribution and usage pattern of anti-malarial plants shows substantial variability across a spectrum of geographic and social strata in the country. Baseline information gaps are evident in key geographic settings, such as the Beshangul Gumuz and Gambella regions. Divergent preparation and use patterns of anti-malarial herbal remedies, as well as associated toxicity risks and countermeasures, generally demand deeper, exhaustive investigations. Experimental research and advanced chemical analysis are required to identify and validate the therapeutic potential of anti-malarial chemical compounds from promising plant species, with due consideration to efficacy and safety issues. Sustainable development and exploitation of indigenous medicinal plant resources entails coordinated multidisciplinary research programmes that give due credit to traditional practitioners and engage with commercial investors.”

Read the complete article at PubMed Central.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Integration of Traditional Herbal Medicines among the Indigenous Communities in Thiruvarur District of Tamil Nadu

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Integration of traditional herbal medicines among the indigenous communities in Thiruvarur District of Tamil Nadu, India

Krupa J, Sureshkumar J, Silambarasan R, Priyadarshini K, Ayyanar M
J Ayurveda Integr Med. 2018 Aug 14
PubMed: 30120054

Thiruvarur District, Tamil Nadu, India
Thiruvarur District, Tamil Nadu, India [Source: BishkekRocks, WikiMedia Commons]
Investigators at AVVM Sri Pushpam College (Autonomous) explored and documented folk medicinal plant knowledge among the local people in Puliyankudi village of Thiruvarur District, Tamil Nadu, India.

The team recorded 116 plant species used in the Siddha medicinal system, one of the traditional medical systems practiced by Tamil people. Information was collected from traditional healers, traders, local vendors, and other local people with knowledge of medicinal plants.

Basil (Ocimum basilicum)
Basil (Ocimum basilicum) [Photo: WAH]
Limonia acidissima was reported by all the interviewed informants, followed by Achyranthes aspera, Celosia argentea, Aristolochia bracteolata, Ocimum basilicum, Mangifera indica, Lantana camara, and Physalis minima. Reported medicinal uses included kidney problems, dental care, and respiratory problems, among others.

From the conclusion:

“The study exemplifies the vast diversity of medicinal plants which are used for primary health care system and this is the first report from ethnobotanical point of view. Local people (informants) in the study area utilizing a number of plants for preparation of folk medicines with proper training acquired from their forefathers and also from some ancient text book resources. However, some of the plant species such as Acalypha indica, Annona squamosa, Aponogeton natans, Azima tetracantha, Basella rubra, Cardiospermum halicacabum, Coccinia grandis, Digera muricata, Ipomoea aquatica, Phyllanthus emblica are used along with their food in day-to-day life. The plants with highest use values in this study indicates possible occurrence of valuable metabolites. There is an urgent need for exploiting frequently used ethnomedicinal plants for the development of potential new drugs to treat various ailments.”

Read the complete article at PubMed.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

The Medicinal Plants of Bhutan’s Lower Kheng Region

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Pharmacological, ethnopharmacological, and botanical evaluation of subtropical medicinal plants of Lower Kheng region in Bhutan

Wangchuk P, Yeshi K, Jamphel K
Integr Med Res. 2017 Dec; 6(4): 372–387
PubMed Central: PMC5741394
Zhemgang Dzongkhag (District), Bhutan
Zhemgang District, Bhutan

Investigators at James Cook University, Wangbama Central School, and the Bhutan Ministry of Health conducted an ethnobotanical study to identify subtropical medicinal plants from the Lower Kheng region in the Zhemgang District of Bhutan, where Bhutanese Sowa Rigpa medicine has been practiced for centuries:

“In Bhutan, while some traditional physicians argue that Sowa Rigpa originated in the 8th century CE with the advent of Mahayana Buddhism, many scholars believe that it was only in 1616 that Lama Zhabdrung Nawang Namgyal laid written foundation to this medical system. The Bhutanese Sowa Rigpa medicine (BSM) belong to the larger corpus of the Tibetan scholarly medical (TSM) system, which was derived from Chinese Traditional Medicine, Indian Ayurvedic Medicine, Greco-Roman medicine, and the Persian medicine (Galenos). However, the country’s culture, tradition, local medical practices, geography, and vegetation influenced the way BSM evolved independently over many centuries, making it specific to Bhutan.”

The authors note that theirs is the first ethnobotanical study to be conducted in the Lower Kheng region:

“The criteria and reasons for choosing these areas as our ethnobotanical study areas were: (1) there was unsubstantiated/anecdotal claim about the lush growth of LAMP in the region; (2) no ethnobotanical study has been conducted in this region to date; and (3) Lower Kheng people are poor and their engagement in the medicinal plants collection, cultivation, and marketing programs could help them generate cash income.”

Aquilaria malaccensis
Aquilaria malaccensis [Source: W. Saunders – Illustrations of the botany and other branches of the natural history of the Himalayan Mountains. Volume 2 (Public Domain)]
The research team identified 61 medicinal plants, 30 of which were found in abundance, including Terminalia chebula, Terminalia bellirica, and Phyllanthus emblica, together known as “King of Medicine” (Mengi-Pawo) or “Three Powerful Medicines.” Another species, Aquilaria malaccensis, which is considered rare in other parts of the world, was found to be abundantly cultivated in household and community gardens throughout the region. More than 20 species were found in all the villages surveyed. These included Bombax ceiba, Canarium strictum, Cassia tora, Cautleya spicata, Choerospondias axillaris, Cinnamomum impressinervium, Erythrina arborescens, Justicia adhatoda, Knema tenuinervia, Mucuna imbricata, Otochilus lancilabius, Phlogacanthus thyrsiformis, Piper mullesua, Rhus chinensis, Stephania glabra, Symplocos sumuntia, and Tinospora cordifolia.

In their conclusion, the authors recommend further work toward sustainable development and commercialization of the region’s medicinal plants:

“Many plant species have commercial and economic values. While MSP is currently viewed as the sole domestic market for these medicinal plants, many species have international significance (especially applicable to countries that practice Tibetan Sowa Rigpa medicine and Indian Ayurvedic medicine including India, Nepal, Mongolia, Tibet, Europe, and Northern America). The communities would largely benefit by domesticating or cultivating them in the household gardens or as cash crops in their family orchards. This medicinal plants program has the potential to alleviate poverty in these three Gewog communities and could enhance the happiness, wellbeing and development in Bhutan. Since the communities consume 28 medicinal plants as food grains, spices, herbs, and fruits, it can be assumed that the local people are also deriving health benefits.”

Read the complete article at PubMed Central.




The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.

Ethnobotany of the Nakuan People: Past & Present Medicinal Uses of Plants

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Naukan ethnobotany in post-Soviet times: lost edibles and new medicinals

Jernigan KA, Belichenko OS, Kolosova VB, Orr DJ
J Ethnobiol Ethnomed. 2017 Nov 17;13(1):61
PubMed Central: PMC5693499

Investigators at the University of Alaska Fairbanks, European University at St. Petersburg, and Institute for Linguistic Studies of the Russian Academy of Sciences conducted an ethnobotanical study of health-related plant use among speakers of the critically endangered Naukan language in the Russian Far East, as part of a larger project to document and compare edible, medicinal, and spiritual plant use among the Naukan and Chukchi peoples of Chukotka, Russia, and the Central Alaskan Yup’ik.

Cape Dezhnev
Detail of a USCGS chart from 1937 showing Cape Dezhnev (East Cape) and the historical villages Tunkan, Uelen (Ugelen), Naukan (Nuokan), Enmitahin, and Dezhnevo (Port Dezhnev). [Source: Wikimedia Commons, Public Domain]
Writing in the Journal of Ethnobiology and Ethnomedicine, the authors begin by describing the history of the Naukan people, which is marked by forced relocation under the Soviet regime:

“The village of Naukan (originally called Nevuqaq) was built on Cape Dezhnev, at the extreme eastern end of Eurasia. Subsistence practices focused on hunting sea mammals including the gray whale (Eschrichtius robustus), walrus (Odobenus rosmarus), spotted seal (Phoca largha), and bearded seal (Erignathus barbatus). This was supplemented by hunting of land mammals and gathering of plants and smaller marine organisms. During the Russian Imperial and early Soviet period, the site served as an important center for commercial and cultural exchange between the Chukchi on the Russian side and the Iñupiat on the Alaskan side of the Bering Strait. Intermarriages were common between the people of Naukan and the islands of Big and Little Diomede, in the Russian and US territories, respectively.

In 1958, the Soviet government closed Naukan as part of a larger program of consolidation of local population centers, and residents were forced to move to the neighboring Chukchi villages of Nunyamo and Uelen. Nunyamo, in turn, was closed in 1977, and local people moved from there to the villages of Lavrentiya and Lorino, where most reside today.

Following relocation, the Naukan people and their culture experienced significant changes in spiritual worldview, subsistence practices, social structure, and language proficiency. Waves of military and civilian migrants from other parts of the Soviet Union also contributed to these broad changes through direct personal interaction, including intermarriages. Although Naukan people did not experience the acculturative influences of missionary activity that were widespread on the Alaskan side of the Bering Strait, shamans were persecuted and the accompanying spiritual practices were greatly challenged by the dominance of materialism under Soviet rule.”

Artemisia tilesii
Artemisia tilesii, Denali National Park and Preserve [Source: Wikimedia Commons, NPS / Jacob W. Frank, Public Domain]
Working with Naukan speakers in Russia and Alaska, the team documented 42 ethnobotanically useful species with Naukan names. While participants reported a decrease in the number of edible species harvested from what they recall from their youth, the number of species considered to be medicinal increased significantly. These medicinal plant species included Alaria marginata, Angelica gmelinii, Artemisia tilesii, Empetrum nigrum, Epilobium latifolium, Laminaria saccharina, Petasites frigidus, Polygonum tripterocarpum, Rhodiola integrifolia, Rhododendron tomentosum, Rubus chamaemorus, Salix pulchra, and Vaccinium vitis-idaea.

In their conclusion, the authors note a broadening in focus from the specifically therapeutic to include more preventative applications of medicinal plants by the Naukan-speaking people who have survived into the modern era:

“The most surprising result of this research is the direction of change in medicinal plant use. The Naukan present an interesting case where acculturative forces appear to have significantly expanded the botanical pharmacopeia through the borrowing of ethnic Russian traditions. Older Naukan participants often said that their original concept of medicine emphasized prevention. For example, the leaves of willows (Salix pulchra Cham.) and willow herb (Epilobium latifolium L.) aid the digestive system and help prevent stomach upset when they are eaten as part of a meal. This traditional emphasis on staying healthy reflects findings by researchers working in some other parts of the arctic as well.”

Read the complete article at PubMed Central.

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