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twinnett
07-03-2006, 06:10 AM
Ok...I use this stuff like crazy. Thought it was healthier than Splenda, but I just read something that said it causes infertility in rats and maybe cancer and that it's not approved by the FDA. Has anyone heard these things about it??

*supermomma*
07-03-2006, 07:27 AM
Ok...I use this stuff like crazy. Thought it was healthier than Splenda, but I just read something that said it causes infertility in rats and maybe cancer and that it's not approved by the FDA. Has anyone heard these things about it??

"Departamento de Biologia, Setor de Fisiologia, Faculdade de Filosofia, Ciencias e Letras, Universidade de Sao Paulo, Ribeirao Preto, Brazil. msmelis@ffclrp.usp.br

A study conducted on prepubertal male rats showed that chronic administration (60 days) of a Stevia rebaudiana aqueous extract produced a decrease in final weight of testis, seminal vesicle and cauda epididymidis. In addition, the fructose content of the accessory sex glands and the epididymal sperm concentration are decreased. Stevia treatment tended to decrease the plasma testosterone level, probably by a putative affinity of glycosides of extract for a certain androgen receptor, and no alteration occurred in luteinizing hormone level. These data are consistent with the possibility that Stevia extracts may decrease the fertility of male rats."

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=Abstract&list_uids=10619379&query_hl=9&itool=pubmed_docsum

I think it is important to be wary of any supplement (and I would add stevia to this category for the time being, as it hasn't been evaluated--just as all supplements carry the "These statements have not been evaluated by the FDA" warnings) and to proceed with caution. Unfortunately, this study I found doesn't say how much stevia was given to the rats--when they did creatine studies with rats, they were giving them like 1 gram per pound of body weight, so that doesn't translate correctly to humans (what human would take 1g/lb of creatine? That's insane...).

Found this too, but take it with a grain of salt as it was found on stevia.net:


In 1991 a study was done by researchers at the Chulalongkorn University Primate Research Center in Bangkok, Thailand (Yodyingyuad, 1991). The researchers' objective was to study the consequences of daily ingestion of stevioside -- the main active sweetening agent in the stevia plant -- in hamsters and its effects on two subsequent generations.
This study involved four groups of 20 hamsters (10 males and 10 females) who were one month old. The first group was fed a daily stevioside dosage of 500 mg/kg; the second group received a higher dose at 1,000 mg/kg; and the third group dosage was the highest at 2,500 mg/kg. The fourth group, which served as the control, received no stevioside. (Chinese researchers have estimated that the daily human consumption of stevioside is about 2 mg/kg; Xili, 1992).
The study showed no significant difference in the average growth of the first generation of hamsters in the groups receiving stevioside -- no matter what dosage they were given. Even the third generation of hamsters, at 120 days of age, showed no significant differences in body weight -- no matter which group they were in.
As to the mating performance, all three generations performed the same, no matter which dose of stevioside they received. Their performance was equal to the controls.
In summary, no growth or fertility abnormalities were found in hamsters of either sex. Mating was efficient and successful.
The researchers agreed, "The results of this study are astonishing. Stevioside at a dose as high as 2,500 mg/kg did not do any harm to these animals. We conclude that stevioside at a dose as high as 2.5 grams per kilogram of body weight affects neither the growth nor reproduction in hamsters."

I use it, but only about a packet at a time in my oats in the morning, and that's only until I run out (which I did a couple of weeks ago) bc I have to drive 30 mins to get more...