What's the difference between comfrey and cumfrey?
Comfrey
Definition:
(n.) A rough, hairy, perennial plant of several species, of the genus Symphytum.
Example Sentences:
(1) The carcinogenicity of Symphytum officinale L., Russian comfrey, used as a green vegetable or tonic, was studied in inbred ACI rats.
(2) The acute and long-term health risks at the normally-low levels of comfrey consumption are evaluated and discussed.
(3) In this article, the toxic properties of pyrrolizidine alkaloids are reviewed briefly, with particular reference to their presence in comfrey.
(4) The major source was a powder purporting to contain ground comfrey root (Symphytum sp).
(5) The patient had been on a predominantly vegetarian diet and, prior to his illness, took comfrey leaves which are known to contain hepatotoxic pyrrolizidine alkaloids.
(6) Three groups of 19--28 rats each were fed comfrey leaves for 480--600 days; four additional groups of 15--24 rats were fed comfrey roots for varying lengths of time.
(7) Other plant toxins excreted through the milk that pose a toxicity hazard include pyrrolizidine alkaloids in Senecio, Crotalaria, Heliotropium, Echium, Amsinckia, Symphytum (comfrey), Cynoglossum (hounds tongue) and Festuca (tall fescue); piperidine alkaloids in Conium, tobacco and others; quinolizidine alkaloids in Lupinus; sesquiterpene lactones of bitterweed and rubber weed; and glucosinolates in Amoracia (horseradish), Brassica (cabbage, broccoli, etc.
(8) Comfrey is widely used as a herbal remedy, but so far has only been implicated in two other documented cases of human hepatic veno-occlusive disease.
(9) Hepatocellular adenomas were induced in all experimental groups that received the diets containing comfrey roots and leaves.
(10) The regular use of comfrey as part of the diet or for medicinal purposes may be a potential health risk as a result of the presence of naturally-occurring pyrrolizidine alkaloids.
(11) On the basis of the data that are available currently, the small but significant long-term risk that is associated with the consumption of comfrey justifies the need to limit its intake.
(12) This fickle stream – burrowing through Derbyshire's prettiest dale, now thick with comfreys and the heavy scent of elder – has proved a little more reliable in recent years.
(13) Three groups of young adult rats were fed pyrrolizidine alkaloids derived from Russian comfrey to study the effects of the herb on the liver.
(14) A possible causal association of comfrey and this patient's veno-occlusive disease is suggested by the temporal relationship of the ingestion of comfrey to his presentation, the histological changes in the liver and the exclusion of other known causes of the disease.
(15) The safety of comfrey, a widely used herb, in relation to human consumption requires further investigation.
(16) The second patient had consumed a large amount of comfrey teas, which were shown to contain high levels of pyrrolizidine alkaloids.