Buckwheat

Other Names

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Synopsis

Buckwheat (Fagopyrum esculentum Moench): A Comprehensive Reference

1. Identity and Botanical Classification

1.1 Nomenclature and Taxonomy

The common buckwheat, Fagopyrum esculentum Moench (family Polygonaceae), is a pseudocereal that contains the bioactive compound rutin in high yield. Buckwheat owes its German and botanical names to its similarity to the beechnut: "fagus" (Latin = beech) and "pyros" (Greek = wheat); the species name "esculentum" (Latin) means "edible." There are three best-known species of buckwheat: common buckwheat (Fagopyrum esculentum), Tartary buckwheat (Fagopyrum tataricum), and cymose buckwheat (Fagopyrum cymosum).

Buckwheat is commonly described as a pseudocereal, a short-duration crop, a cash crop, and a hardy crop. It is not a cereal or grass, but its seeds (achenes) can be used in the same way as cereal grains. The pseudocereal name is derived from their production of small grain-like seeds. The triangular seed of buckwheat resembles those of the beech nut from the beech tree (Fagus sylvatica).

Tartary buckwheat (Fagopyrum tataricum Gaertn.) originates in mountain areas of western China and is mainly cultivated in China, Bhutan, northern India, Nepal, and central Europe. Tartary buckwheat shows greater cold resistance than common buckwheat and has traits for drought tolerance. Common buckwheat is widely cultivated in Asia, Europe, and the Americas, while Tartary buckwheat is most grown in Asia (e.g., China, Bhutan, Nepal, and India) with a small quantity of production in the border region of Luxembourg, Germany, and Belgium.

1.2 Common Names

The plant is also known as Indian Wheat, particularly in North America. In French it is known as blé noir (black wheat) or sarrasin (Saracen); similarly, in Italy it is known as grano saraceno (Saracen grain). In India, buckwheat flour is known as kuttu ka atta.

1.3 Common Forms and Preparations

Buckwheat products include whole groats, cracked groats, flour, and tea, used in both sweet and savory dishes. For therapeutic purposes, the dried herb (flowers, leaves, and stems) is collected at flowering time. A tea can be prepared from it in cut form, and powdered buckwheat herb is also available in tablet form.

Buckwheat pasta is made in various shapes in Italy as pasta di grano saraceno and as the flat ribbons of pizzoccheri. Buckwheat groats are commonly used in eastern Europe to make a porridge called kasha. Buckwheat noodles are used in Tibet and Nepal to make thukpa soup, and similar noodles play a major role in the cuisines of Japan (soba) and Korea (naengmyeon, makguksu, and memil-guksu).

2. Traditional and Historical Use

2.1 Origins and Early Cultivation

Common buckwheat was domesticated and first cultivated in inland Southeast Asia, possibly around 6000 BC, and from there spread to Central Asia and Tibet, and then to the Middle East and Europe. Domestication most likely took place in the western Yunnan region of China. The oldest remains found in China so far date to approximately 2600 BC, while buckwheat pollen found in Japan dates from as early as 4000 BC.

It is the world's highest-elevation domesticate, being cultivated in Yunnan on the edge of the Tibetan Plateau or on the plateau itself.

2.2 Asia

Buckwheat is popular in Japan as a healthy food because of its rutin content, which is reported to aid in increasing the elasticity of blood vessels and therefore prevent hardening of the arteries. In Japan, buckwheat noodles have been eaten for more than 400 years and are considered a traditional food. Tartary buckwheat is reported to be used as a medicinal plant. According to Hu et al. (1992), the leaf of Tartary buckwheat is a drug used in traditional Chinese medicine.

In India, buckwheat flour has long been culturally associated with many festivals like Shivratri, Navaratri, and Janmashtami.

2.3 Europe

Buckwheat made its significant entrance into Europe during the Middle Ages, around the 13th to 15th centuries. It was particularly embraced in Eastern and Central Europe, in countries like Russia, Ukraine, and Poland. Germany was the first country in Europe to grow buckwheat, in 1396; then the crop was introduced into Belgium, France, Italy, and Britain in the 17th century. Later buckwheat was brought to North America from the Netherlands.

In the Middle Ages, buckwheat was an important source of food in Europe, especially in Russia and Eastern Europe, where it still plays a central role in the diet today. In Slovenia, introduced in the 15th century, it thrived in the Alpine and karstic regions due to its resilience in poor soils and at high altitudes. In the Primorsko-Notranjska region, ajdova kaša (buckwheat porridge) became a dietary staple.

2.4 North America

Buckwheat was one of the earliest crops introduced by Europeans to North America. Buckwheat came to America with early European colonists and was most commonly grown in the northeast and northwest of the country. At its peak of production in 1886, buckwheat was most commonly used for flour and animal feed. Major agricultural advances of the 20th century, such as nitrogen fertilizer, increased the productivity of major staple crops like wheat and corn to such a degree that the production of minor rotational crops such as buckwheat declined steadily. It was not until the 1970s that buckwheat enjoyed a boost in popularity.

2.5 Traditional Medicinal Use

For about 20 years, flowering buckwheat herb has been used in therapeutic preparations to treat vascular diseases. It has a high content of rutin (a flavonoid) and was named medicinal plant of the year in 1999. Authorized traditional indications include chronic venous insufficiency (CVI) stage I and II, as well as microcirculatory disorders and prophylaxis of arteriosclerosis.

3. Botanical Description and Plant Parts Used

The plant cultivates at high altitudes, is a short-day plant in which flowers appear within 3–6 weeks, matures in 3–4 months (90–110 days), and conducts cross-pollination. The seed of buckwheat is dark brown or black in color; the seed coat is green or pale brown.

Buckwheat (Fagopyrum esculentum) is a heterostylous self-incompatible crop that requires outcrossing for seed formation. Buckwheat farming is common in Eastern European countries and the Far East, while in the UK and other Western European countries the plant has had limited medicinal or food applications.

The quality of buckwheat herb is specified in the European Pharmacopoeia (Ph. Eur.).

4. Key Constituents and Active Compounds

4.1 Overview of the Phytochemical Profile

From a nutritional point of view, buckwheat is one of the most nutritious foods, with a most complete composition, because its grains are rich in proteins with a balanced composition of amino acids, gluten-free flour, dietary fibre, vitamins, resistant starch, phytosterols, fagopyrins, fagopyritols, D-fagomine, flavonoids, and phenolic compounds/phenolic acids, and they have demonstrated beneficial properties in the treatment of chronic diseases.

Buckwheat contains a diverse array of bioactive compounds—flavonoids (notably rutin and quercetin), phenolic acids, D-fagomine, phytosterols, tocopherols, and fagopyrins—distributed across its seeds, leaves, hulls, flowers, and roots. The levels of these bioactive compounds depend strongly on species, growth stage, environment, and processing, and these differences can be very large.

4.2 Macronutrient Composition

Buckwheat contains starch (65–75%), protein (10–12.5%), lipid (4.7%), minerals, and vitamins. Although buckwheat grain has a low protein content (common buckwheat, 10.6 g/100 g dry weight; Tartary buckwheat, 10.3 g/100 g dry weight), it has a balanced amino-acid composition, with high levels of essential amino acids such as leucine and lysine. Globulins make up a significant portion of the total protein content, ranging from 43.3% to 64.5%. Albumins contribute around 12.5%–18.2%. Prolamins, which are gluten-like proteins, are present in smaller amounts, ranging from 0.8% to 2.9%. Glutelins comprise another portion, ranging from 8.0% to 22.7%.

Predominant minerals of buckwheat include potassium, magnesium, phosphorus, calcium, iron, copper, zinc, and manganese; vitamins include A (β-carotene), B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), C (ascorbic acid), and E (tocopherols).

4.3 Rutin

Rutin is widely present in plants but is relatively rare in their edible parts. It was first detected in Ruta graveolens, which gave the common name to this pharmaceutically important substance. Among fruits, vegetables, and grain crops, grapes and buckwheat are the most important rutin-containing foods. No rutin was found in cereals and pseudocereals except buckwheat, which can be used as a good source of dietary rutin.

Different parts of the plant contain different concentrations of rutin. Most rutin is accumulated in the inflorescence (up to 12%, dry weight basis), in stalks (0.4–1.0%, d.w.b.), and in upper leaves (8–10%, d.w.b.). In bran fractions, the concentration of rutin was 131–476 ppm, and in flour fractions 19–168 ppm. On average, about 300, 1,000, and 46,000 ppm of rutin were found in leaves, stems, and flowers, respectively.

Buckwheat seeds have been shown to contain 7.2–47.9 mg rutin per 100 g dry weight, with quercetin in the range of 0–1.22 mg/100 g depending on the variety. Rutin makes up as much as 90% of the total flavonoid content.

In Tartary sprouts, rutin represented 90% of the total content of phenolics, and only 20% in common sprouts. The main molecules in buckwheat with biological activity associated with positive effects on human health are rutin and quercetin, both of which are more abundant in F. tataricum than in F. esculentum.

4.4 Quercetin

The contents of the flavonoids rutin and quercetin are very variable among Tartary buckwheat samples from different origins and parts of the plants. Quercetin is formed after the degradation of rutin by the Tartary buckwheat enzyme rutinosidase, which mainly occurs after grain milling during mixing of the flour with water.

Central among buckwheat's bioactive compounds are flavonoids—particularly the glycoside rutin and its aglycone quercetin—which exhibit potent antioxidant, anti-inflammatory, and cardioprotective activities.

4.5 Other Flavonoids and Phenolic Compounds

Polyphenolic compounds (flavonoids and phenolic acids) are bioactive ingredients in buckwheat that increase its nutraceutical potential. Buckwheat is a rich source of flavonoids such as rutin, isoorientin, quercetin, isovitexin, vitexin, and orientin. Buckwheat is the richest source of phenolic acids available in free or bound form. The phenolic acids in buckwheat are mostly benzoic acid and cinnamic acid derivatives, specifically p-hydroxybenzoic, syringic, protocatechuic, vanillic, ferulic, p-coumaric, gallic, caffeic, chlorogenic, and salicylic acids.

Phenolic acids, including ferulic and p-coumaric acids, further enhance buckwheat's scavenging of free radicals. Buckwheat seeds also contain orientin, isoorientin, vitexin, and isovitexin.

4.6 D-Fagomine and Fagopyritols

D-fagomine is chemically a polyhydroxylated piperidine compound and acts as an inhibitor of the glycosidase enzyme. D-fagomine and its isomer 3,4-di-epi-fagomine have been reported in buckwheat with a higher concentration (43–44 mg/kg) in groats. D-fagomine has pharmaceutical properties against diabetes, pathogenic diseases, cancer, AIDS, overweight, and viral diseases.

Unique oligosaccharides known as fagopyritols serve as insulin-mimetic agents, while resistant starch and a balanced amino acid profile support glycemic control and gut health.

4.7 Fagopyrins

Buckwheat contains many healthy nutrients, and its consumption is therefore increasing. Buckwheat also contains fluorescent phototoxic fagopyrins. Fagopyrin is the primary phototoxic substance in buckwheat, concentrated mainly in the green plant parts like leaves and flowers.

4.8 D-Chiro-Inositol

The active component in buckwheat responsible for lowering blood glucose appears to be chiro-inositol. The compound, which is relatively high in buckwheat and rarely found in other foods, has been previously shown in animal and human studies to play a significant role in glucose metabolism and cell signaling. Researchers do not know exactly how it works, but preliminary evidence suggests that it may make cells more sensitive to insulin or may act as an insulin mimic.

5. Mechanisms of Action

5.1 Antioxidant Mechanisms

The predominant function of rutin is to prevent the occurrence of oxidative stress and inflammatory responses by removing reactive oxygen species (ROS) or preventing their formation, directly and positively correlating with its antioxidative activity. Buckwheat has substantial antioxidant capabilities, including the ability to bind iron ions and eliminate highly reactive free radicals and superoxide anions.

Mechanistic studies show that buckwheat's bioactive compounds act through key molecular pathways: activating Nrf2-ARE to enhance antioxidant defense, inhibiting NF-κB and MAPK to reduce inflammation, and regulating PPAR-α/γ to improve lipid metabolism and insulin sensitivity.

5.2 Vascular and Capillary Mechanisms

Rutin strengthens capillaries, lowers vascular permeability, and has anti-inflammatory and antithrombotic properties by stopping platelets from sticking together. Buckwheat herb contains a high concentration of the vascular-protective flavonoid rutin, which seals veins, reduces fragility and excessive permeability of blood vessels, and increases their elasticity. This prevents fluid retention in the tissue (edema), reduces swelling in venous congestion, and promotes blood flow in the capillary system.

Rutin has potential anti-inflammatory properties. It is a potent inhibitor of phorbol-12-myristate 13-acetate (PMA), TNF-α, IL-1β, and caecal ligation and puncture (CLP)-mediated endothelial cell protein C receptor shedding.

5.3 Glucose-Lowering Mechanisms

In animal model studies, dietary consumption of 10% buckwheat and 0.1% rutin provided beneficial outcomes including lowering blood glucose levels and HbA1c, enhancing HOMA-B%, improving glucose tolerance, and pyruvate tolerance. Serum GLP-1, ghrelin, leptin, and adiponectin levels were also increased at end of treatment. Increased GLP-1 levels and the improvement of β-cell function were closely associated with the blood glucose-lowering effects observed.

Buckwheat-based flavonoids, particularly rutin, prevent blood vessel hardening, boost microcirculation, detoxify the blood, improve blood circulation, and lower blood and urine sugar levels.

5.4 Cholesterol-Lowering Mechanisms

Buckwheat protein can reduce serum cholesterol levels through increased fecal excretion of steroids, which is induced by the binding of steroids to undigested protein. Digestion-resistant peptides are largely responsible for bile acid elimination.

6. Scientific Evidence by Area of Use

6.1 Cardiovascular Risk Markers and Lipid Profile

Evidence strength: Preliminary; human data are limited with inconsistent findings.

Buckwheat is suggested to have beneficial effects, but evidence on how it affects cardiometabolic health (CMH) is not yet established. Researchers aimed to assess the effects of buckwheat and/or its related bioactive compounds on cardiovascular disease (CVD) risk markers in adults.

A 2022 systematic review and meta-analysis selected 16 human studies based on 831 subjects with mild metabolic disturbances, such as hypercholesterolemia, diabetes, and/or overweight. Eight studies investigating primarily grain components were included in the meta-analyses (n = 464). High study heterogeneity was present across most of the analyses.

Weighted mean difference (WMD) for subjects receiving buckwheat supplementation, compared to controls, were −0.14 mmol/L (95% CI: −0.30; 0.02) for total cholesterol (TC), −0.03 mmol/L (95% CI: −0.22; 0.16) for LDL cholesterol, −0.14 kg (95% CI: −1.50; 1.22) for body weight, −0.04 mmol/L (95% CI: −0.09; 0.02) for HDL cholesterol, −0.02 mmol/L (95% CI: −0.15; 0.11) for triglycerides, and −0.18 mmol/L (95% CI: −0.36; 0.003) for glucose.

Evidence on how buckwheat affects cardiometabolic health is limited. However, the available literature indicates that buckwheat supplementation in mild dyslipidemia and type 2 diabetes may provide some benefit in lowering total cholesterol and glucose, albeit non-significant.

An earlier meta-analysis published in 2018 found somewhat more positive results: using random-effects models, the weighted mean difference of post-intervention concentrations of blood glucose, total cholesterol, and triglycerides were significantly decreased following buckwheat intervention compared with controls (differences in blood glucose: −0.85 mmol/L [95% CI: −1.31, −0.39]; total cholesterol: 0.50 mmol/L [95% CI: −0.80, −0.20]; and triglycerides: 0.25 mmol/L [95% CI: −0.49, −0.02]). However, all exhibited high unexplained heterogeneity.

Contrary to animal models, studies in humans have not yet established buckwheat's role as a dietary component for prevention of CVDs. Some human studies have indicated that buckwheat can reduce serum lipid levels and blood pressure, as well as improve body morphology parameters, while other studies have failed to show any favorable modification of CVD risk.

6.2 Blood Glucose Regulation and Diabetes

Evidence strength: Preliminary in humans; largely consistent in preclinical models but human RCT data are limited and mixed.

Two clinical trials reported more balanced postprandial glucose and insulin levels following the consumption of buckwheat. A comparison of buckwheat pasta and corn pasta indicated that buckwheat pasta improved postprandial glucose levels in type 1 diabetes and celiac disease. Buckwheat pasta may decrease the risk of early postprandial hypoglycemia and prevent hyperglycemia in the prolonged postprandial phase. However, a study conducted in a healthy population reported conflicting results.

Data on fasting blood glucose concentrations were reported in six randomized controlled trials representing a total of 312 participants in both arms. The pooled result in the 2022 meta-analysis showed a non-significant trend toward lower fasting glucose.

Researchers in Canada found evidence that buckwheat extracts may be beneficial in the management of diabetes. In a controlled study, they showed that extracts of the seed lowered blood glucose levels by 12 percent to 19 percent when fed to diabetic rats. This was a preclinical (animal) study.

Buckwheat helps avoid diabetes and its complications by reducing fasting blood sugar, increasing insulin levels, lowering glycosylated hemoglobin and glycosylated serum protein, and suppressing blood sugar levels, as reported in in vitro studies of buckwheat seed and plant extracts showing neuroprotective and antioxidant properties.

6.3 Chronic Venous Insufficiency (CVI) and Edema

Evidence strength: Moderate; supported by at least one adequately powered RCT in humans.

The efficacy of a buckwheat herb tea was determined in patients with chronic venous insufficiency (CVI) in a single-centre, randomised, double-blind, placebo-controlled clinical trial. Sixty-seven male and female patients (aged 22–74 years) with CVI were randomly divided into two groups after a 2-week run-in period. They received either buckwheat herb tea (Fagopyrum esculentum) or a placebo tea for a period of 3 months. The main outcome measure was the lower leg volume determined by ultrasound.

Although the mean partial leg volume did not change in the treatment group (from 2041 to 2073 ml), it increased in the placebo group by 110 ml (from 1972 to 2082 ml) according to intent to treat. The difference between the groups was significant. Subjective clinical symptoms were significantly reduced in both groups. The mean diameters of the femoral veins were reduced and capillary permeability was improved, but neither change was statistically significant. No drug-related adverse effects were observed.

The authors concluded that CVI is a very placebo-sensitive condition, and that treatment with buckwheat herb tea is safe and could have a favourable influence on patients with CVI such that further oedema development is prevented.

6.4 Antioxidant Capacity in Humans

Intake of buckwheat or buckwheat-enriched products is associated with a wide range of health benefits, including anticancer, anti-inflammatory, hypoglycemic, and hypocholesterolemic effects, although the specific bioactive components responsible for the beneficial effects of buckwheat remain uncertain.

Buckwheat's high content of phenolic components gives it antioxidant properties according to in vitro research. Its seeds also contain orientin, isoorientin, vitexin, isovitexin, rutin, and quercetin. Buckwheat's flavonoid contents boost its antioxidant power. Comparative studies demonstrate that the rutin, phenolic acids, and derivatives found in buckwheat possess superior antioxidant activity compared to oats or barley.

6.5 Body Weight and Body Composition

Evidence strength: Weak; no significant effect observed in meta-analysis.

Data on body weight were reported in three randomized controlled trials representing 343 participants in both arms, all of included studies judged of high methodological quality. The results show no significant effect in the buckwheat intervention arm in comparison with controls (WMD = −0.14 mmol/L; 95% CI: −1.50, −1.22, I² = 0.0%, p = 0.990).

6.6 Gluten-Free Applications in Celiac Disease

As buckwheat does not contain the gluten proteins, it is used as food for people with celiac disease. The balanced amino acid composition of buckwheat proteins represents an important source of dietary protein for people who maintain vegetarian or vegan diets.

Particularly, as buckwheat is free from gluten, it can readily be included in the diet for people with gluten intolerance.

7. Body Systems and Health Areas Associated with Buckwheat

7.1 Cardiovascular and Circulatory System

Buckwheat can provide health benefits due to its contents of resistant starch, mineral elements, proteins, and, in particular, phenolic substances, which prevent the effects of several chronic human diseases, including hypertension, obesity, cardiovascular diseases, and gallstone formation. Buckwheat proteins yield peptides with antihypertensive and lipid-lowering effects.

By assisting in regulating vasoconstriction and diastole, buckwheat extract helps lower blood pressure with quercetin as the key active component in minimizing oxidative stress of blood vessels and restoring vasodilation in clinical trials.

7.2 Endocrine and Metabolic System

The mineral contents of buckwheat provide high potassium and magnesium intake, which support cardiometabolic health by regulating blood pressure and alleviating insulin resistance.

7.3 Digestive / Gastrointestinal System

Resistant starch and a balanced amino acid profile support glycemic control and gut health. The biological values of buckwheat proteins are outstanding, but antinutritional factors (tannins and proteases) associated with buckwheat proteins lower their protein digestibility.

7.4 Nervous System

Accumulating excessive amyloid-β protein aggregation contributes to oxidative stress in the central nervous system, leading to neurodegenerative disorders. The most common neurodegenerative disorders are Parkinson's disease and Alzheimer's disease. In vitro studies have shown that extracts from buckwheat seeds and plants have neuroprotective properties and antioxidant activities. These findings are limited to preclinical and in vitro studies; no human clinical data on neuroprotection are established.

8. Dosage Forms and Doses Reported in Studies

8.1 Buckwheat Herb Tea (Infusion)

In the pivotal randomised, double-blind, placebo-controlled clinical trial for CVI, 67 male and female patients received buckwheat herb tea (Fagopyrum esculentum) or a placebo tea for a period of 3 months. The specific per-cup dose was not reported in publicly available abstract data.

8.2 Rutin Isolated Supplement

In a 2016 randomised, double-blind, placebo-controlled trial in Japan, 144 subjects (aged 30 to 69 years) were randomly allocated to consume 500 mg of rutin from Manten-Kirari Tartary buckwheat in the form of noodles and cookies, or an identical placebo food, daily for 12 weeks.

8.3 Preclinical Dietary Studies

In diabetic murine studies, T2D mice were fed 3% buckwheat, 10% buckwheat, or 0.1% rutin as part of their diet for 4 weeks. These are animal models only.

8.4 General Reported Range for Rutin Supplementation

There is no clear recommended rutin dosage, with doses ranging from 500 milligrams per day to four grams per day in reported studies. One study indicates that taking up to four grams orally per day is an effective and well-tolerated dose. These figures refer to isolated rutin supplementation, not whole buckwheat.

9. Safety Considerations

9.1 General Safety of Food-Grade Buckwheat

Generally, buckwheat seeds, flour, and teas are safe in normal amounts. Diets extensively composed of buckwheat sprouts, herbs, and particularly flowers, or of fagopyrin-rich buckwheat extracts, may cause fagopyrism.

Unlike the shoots of the buckwheat plant, buckwheat groats or seeds are not generally problematic because they contain only trace quantities of fagopyrin. Buckwheat groats are commonly sold as kasha or ground into buckwheat flour, which is used to make soba noodles and buckwheat pancakes. These foods have long been used as staples in many cultures and appear to be perfectly safe.

9.2 Fagopyrism (Phototoxicity)

Fagopyrin is the primary phototoxic substance in buckwheat, concentrated mainly in the green plant parts like leaves and flowers. When ingested in high enough amounts and followed by exposure to sunlight, fagopyrin causes a reaction called fagopyrism, leading to skin inflammation.

When ingested in sufficient quantity, fagopyrin causes the skin of animals and people to become phototoxic—hypersensitive to sunlight. This condition, specifically known as fagopyrism, occurs when the ingested fagopyrin accumulates under the skin and is subsequently activated by sunlight, resulting in a toxic reaction within the skin. Typically, exposed areas of skin turn pink or red within minutes, and a strong burning sensation accompanies the reaction. Within a few hours the exposed areas usually appear to return to normal, however they continue to remain ultrasensitive to cold water, hot water, and friction. This sensitivity can last for days.

Fagopyrin is not activated by ultraviolet light but reacts to a different portion of the sunlight spectrum. Therefore, the normal application of sunscreen offers no protection at all. A higher risk exists with large-scale consumption of raw sprouts or concentrated extracts from the green parts of the plant.

A systematic review of fagopyrins and the phototoxicity of buckwheat found that reliable quantitative data on fagopyrin toxicity are not yet available.

9.3 IgE-Mediated Allergy

Buckwheat can cause IgE-mediated allergy, including severe allergic reactions and anaphylaxis. Exposure can occur when eating buckwheat food (food allergen), when producing or handling buckwheat food (occupational exposure), or when sleeping on buckwheat husk pillows (household environmental exposure).

Buckwheat has been shown to contain potent allergens (e.g., BW24KD, a 24-kDa protein) and the allergens trigger a type I, IgE-mediated, immediate-type hypersensitivity reaction. Fermentation could aid in the development of hypoallergenic buckwheat.

Allergic reactions are separate from toxicity. Some people may develop a standard food allergy to buckwheat, with symptoms ranging from skin rashes to severe anaphylactic shock upon re-exposure. This is distinct from fagopyrism.

Cross-reactivity has been documented: cross-reactivity between buckwheat and coconut has been identified (Ann Allergy Asthma Immunol. 2015 Dec;115(6):530-2). Cross-reactivity between buckwheat and latex has also been reported (Allergy. 1998 May;53(5):538-9).

9.4 Antinutritional Factors

Buckwheat includes some anti-nutrients such as saponin, phytate, and oxalates. These anti-nutrients bind some cations such as Fe, Zn, Ca, and Mg, and lower their bioaccessibility.

9.5 Evidence Base Limitations

Most of the human studies on buckwheat and cardiometabolic health (66.7%) had concerns of risk of bias. Studies investigating other CVD markers were scarce and with inconsistent findings where available. To date, relatively few studies have been carried out to investigate the impact of buckwheat intake on human health.

References

Health Conditions

Health conditions that Buckwheat may help support.

No conditions available.

Body Systems

Body systems that Buckwheat may help support.

No body systems available.