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UC Berkeley comments on Xango

By on February 23, 2006 in MLM Site

Berkeley Wellness:

Q: Can mangosteen juice cure cancer, migraines, and other conditions, as claimed?

A: No. Mangosteen marketers make far-fetched and unsubstantiated claims for their products, which are sold as “dietary supplementsâ€? via multi-level (network) marketing. The most promoted brand is XanGo, which comes both as a juice puree and in capsules. The juice can cost $25 or more for a 25-ounce bottle.

Mangosteen (Garcinia mangostana) is a tangerine-sized tropical fruit native to Southeast Asia. Not to be confused with mango, it has a hard purple rind and white pulp inside. Laboratory studies have specifically looked at compounds in the rind, called xanthones, which seem to have some anti-cancer effects in the test tube. Mangosteen is also said to have antiseptic, antifungal, anti-inflammatory, and antioxidant activity.

Marketers cite long lists of lab studies as “proofâ€? of mangosteen’s health benefits. But there are no clinical trials, and what happens in a test tube or animal may not occur in a human. Any reported benefits in humans have been anecdotal. No one even knows if the processed fruit juice and capsules retain the potentially beneficial compounds. What’s more, the juice is typically a mix of fruit juices—with an undisclosed amount of mangosteen in it.

Bottom line: Exotic fruits and their juices are usually nutritious. But don’t expect mangosteen to be a miracle cure for any disease.

UC Berkeley Wellness Letter, February 2006

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