| Aloe vera extract ingestion linked to gastrointestinal tumors in rats. |
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| New Scientist: Aloe vera food supplements and drinks are supposed to help your gut stay healthy – or so herbalists claim. But now a warning flag has been raised by the US National Toxicology Program (NTP), which has found that rats given drinking water spiked with an extract of the succulent plant developed tumours in their intestines. |