Bulbs and leaves widely eaten; flowers and vivapoarous plantlets also eaten (FAC; TAN; EB54:155); 0.25-1 onion (2-5 oz) (APA); 1 tsp onion juice 3 to 4 x/day (APA); 1 onion per day (JAD); 10-20 ml bulb or leaf infusion (KAP); 1-3 g powdered seed (KAP); 50 g fresh onion or 20 g dry onion (KOM; SHT; WHO); 4-5 tsp tincture/day (PHR); 4-5 Tbsp onion syrup (PHR).
• Grated bulbs heated and mixed with grated soap and applied to abscess (EB49:406).
• Grated bulbs mixed with albumen, pine tar, and soap, and applied topically in setting fractures (EB51:195).
• Arabs use honey extract as expectorant and for stomach cramps; they rub it on the face to remove dark spots or rash (GHA).
• Arabs cook red onions with eggs and sesame oil for cold and cough (GHA).
• Arabs apply crushed bulb juice as eardrops for deafness and infections (GHA).
• Arabs eat fresh onion to clear irritated throat (GHA).
• Bahamans put a slice of onion in the shoe near the heel to treat a cold (JFM).
• Bolivians eat the bulbs for respiratory problems, and for bladder and kidneystones and inflammation (DLZ).
• Bolivians take candied onions for cough, dropsy, insomnia, pertussis, strangury, onion soup for cramps, paralysis, rheumatism, varices (DLZ).
• Curacaons plug an earache or ringing ear with the onion neck (JFM).
• Dominicans use diced bulbs with honey for bronchitis and catarrh (AHL).
• Nicaraguan Garifuna take juice orally for respiratory-pulmonary disorders, worms, and intestinal parasites (IED).
• Haitians apply sliced onion to head for headache (VOD).
• Italians use onions for chilblains, splinters, and thorns (X15664457).
• Japanese put a cut onion under the pillow for insomnia (LIB).
• Peruvians and Bolivians report onion skin tea for laryngitis with loss of voice (DLZ; SOU).
• Peruvians apply the outer layers of the onion to burns to prevent blistering (EGG).
• Russians boil bulbs in vinegar and apply to corns (JLH).
• Spaniards recommend onion juice for buzzing in the ears, and even deafness (JLH).
• Trinidadans take onion decoction for chest cold, cough, and tuberculosis (JFM).
• Yucatanese take 3 tsp onion juice per day for coronary thrombosis, edema, proteinuria, strangury, adding lemon juice for flu, rheumatism, and tonsilitis (JFM).
Class 1. Some idiopathic allergies (JAD). Allergic rhinoconjunctivitis and contact dermatosis reported (WHO).
I have long believed that string beans and raw onions have helped me avoid diabetes. Studies in 2005 — some positive, some negative — have not weakened my belief (X15582196). El-Demerdash et al. (X15582196) strengthened my case, demonstrating hypoglycemic activities of both onion and garlic juice (at 10 ml/kg body weight or 4 g/kg, a huge dose for me, equivalent to 400 g onion juice). The antioxidant and antihyperglycemic activities of onion and garlic may protect against liver and renal damage (X15582196). Conversely, Jelodar et al. (2005) found no hypoglycemic activity for onion, as compared to much more potent garlic (X15738612). Wetli et al. (2005) say that osteoporosis costs America $17 billion economically, over and beyond the pain and suffering. Adding 7% dried onion bulbs to diets decreases bone resorption and increases bone mineral content in growing rats. Rutin had been thought to contribute some of this activity but Wetli et al. (2005) ruled out flavo-noids as the major contributor(s) and suggested instead gamma-L-glutamyl-irans-S-1-propenyl-L-cysteine sulfoxide (GPCS), adding this to the long list of dietary phytochemicals that support bone health, Ca, K, Mg, vit. C, D, and K, phytoestrogens (coumestrol, humulone, isoflavones, zearelenol), possibly other flavonoids (hesperidin, rutin) and monoterpenes (X15853380). Chang et al. (2005d) demonstrated a growth inhibitory effect of alk(en)yl thiosulfates from onion and garlic on tumor cell lines. Sodium n-propyl thiosulfate and sodium 2-propenyl thiosulfate (natural constituents of onion and garlic, respectively) were originally deemed to cause hemolytic anemia in dogs. They inhibit in vitro proliferation of three human tumorigenic cell lines in a dose-dependent manner. Both induced apoptosis (X15890236). Wetli et al. (2005) showed that a gamma-glutamyl peptide (gamma-L-glu-tamyl-trans-S-1-propenyl-L-cysteine sulfoxide) inhibited bone resorption by osteoclasts. One gram onion added to rat food significantly inhibits bone resorption at 2 mM (X15853380). Corea et al. (2005) found four new antispasmodic compounds (furostanol saponins); high concentrations of quercetin, quercetin 4(I)-glucoside, taxifolin, taxifolin 7-glucoside, and phenylalanine were also isolated (X15713001). (=) SMCS proved a better antioxidant than glibenclamide and insulin, but the drugs were better for antidiabetic activity (X12587728). Feeding rats 1 g powdered onion/day/month boosted bone mineral content 17%, bone thickness more than 15%, performing better than calcitonin (=) (JNU). In the study by Park and Shin (2005), cinnamon and onion oil followed garlic and clove bud oils in lethality to the Japanese termite, Reticulitermes speratus Kolbe. Diallyl trisulfide was most toxic, then diallyl disulfide, eugenol, diallyl sulfide, and beta-caryophyllene (X15913300).
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