The purpose of this site is to collect lab research by medical doctors about herbs that are proven to treat illnesses and counter the false attacks on herbs by the medical industry and false claims by alternative medicine. I let the science tell the facts.
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Dandelion - Taraxacum officinale Date Written 6-21-09
Author Joe Holmes Date Revised  

Researchers show that a weed we remove from our lawns has medicinal properties.

Reports below indicate it aids in reducing breast and uterus cancer and disorders of the liver and gallbladder.


1. Taraxacum officinale (Dandelion) induces cytotoxicity through TNF-alpha and IL-1alpha secretion in Hep G2 cells.
Koo HN, Hong SH, Song BK, Kim CH, Yoo YH, Kim HM.
Department of Pharmacology, College of Oriental Medicine, Kyung Hee University, 1 Hoegi-Dong, Dongdaemun-Gu, 130-701, Seoul, South Korea

Taraxacum officinale (TO) has been frequently used as a remedy for women's disease (e.g. breast and uterus cancer) and disorders of the liver and gallbladder. Several earlier studies have indicated that TO exhibits anti-tumor properties, but its mechanism remains to be elucidated. In this study, we investigated the effect of TO on the cytotoxicity and production of cytokines in human hepatoma cell line, Hep G2. Our results show that TO decreased the cell viability by 26%, and significantly increased the tumor necrosis factor (TNF)-alpha and interleukin (IL)-1alpha production compared with media control (about 1.6-fold for TNF-alpha, and 2.4-fold for IL-1alpha, P < 0.05). Also, TO strongly induced apoptosis of Hep G2 cells as determined by flow cytometry. Increased amounts of TNF-alpha and IL-1alpha contributed to TO-induced apoptosis. Anti-TNF-alpha and IL-1alpha antibodies almost abolished it. These results suggest that TO induces cytotoxicity through TNF-alpha and IL-1alpha secretion in Hep G2 cells." PMID: 14687655 (1)

2. Alternation of hepatic antioxidant enzyme activities and lipid profile in streptozotocin-induced diabetic rats by supplementation of dandelion water extract. Cho SY, Park JY, Park EM, Choi MS, Lee MK, Jeon SM, Jang MK, Kim MJ, Park YB. Department of Food and Nutrition, Yeungnam University, Kyongsan 712-749, South Korea.

BACKGROUND: Dandelion water extract (DWE), an herbal medication, may have an effect on the activity and mRNA expression of hepatic antioxidant enzymes and lipid profile in streptozotocin (STZ)-induced diabetic rats. METHODS: Male Sprague-Dawley rats were divided into nondiabetic (control), diabetic, and diabetic-DWE-supplemented groups. Diabetes was induced by injecting streptozotocin (55 mg/kg BW, i.p.) in a citrate buffer. The extract was supplemented in 2.4 g of a DWE/kg diet. RESULTS: The DWE supplement significantly decreased the serum glucose concentration in the diabetic rats. The hepatic superoxide dismutase and catalase activities significantly increased and the GSH-Px activity decreased in the diabetic rats, compared with the control group. When the DWE supplement was given to the diabetic rats, the antioxidant enzyme activity reverted to near-control values. However, there was no difference in the mRNA expression concentrations of these enzymes between the groups. With regard to the hepatic lipid peroxidation product, the malondialdehyde (MDA) content was significantly higher in the diabetic group than in the nondiabetic group. However, the DWE supplement lowered the hepatic MDA concentration in the diabetic-induced rats. The DWE supplement also lowered the total cholesterol and triglyceride concentrations in the serum and hepatic tissue, while increasing the serum HDL-cholesterol in the diabetic rats. CONCLUSIONS: A DWE supplement can improve the lipid metabolism and is beneficial in preventing diabetic complications from lipid peroxidation (helps the liver) and free radicals in diabetic rats." PMID: 11814465 (2)

1 PMID: 14687655
2 PMID: 11814465
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