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Bitter Melon
What is it? Overview Usage Side Effects and Warnings

What is Bitter Melon?

Widely sold in Asian groceries as food, bitter melon is also a folk remedy for diabetes, cancer, and various infections.

Bitter melon continues to be advertised as an effective treatment for diabetes , especially of the type 2 (“adult-onset”) variety. However, evidence used to support this claim is limited to animal studies, uncontrolled human trials and other unreliable forms of evidence. 1 2 3 4 5 Only double-blind, placebo-controlled studies can prove a treatment effective, and the single such study of bitter melon failed to find benefit. 6 (For information on why double-blind studies are essential, see Why Does This Database Rely on Double-blind Studies? )

In test tube studies , a protein in bitter melon called MAP-30 kills viruses and slows the growth of some cancer cells. However, it is a long way from the test tube to real people, and there have not as yet been any human trials...

Safety Issues

As a widely eaten food in Asia, bitter melon is often regarded as safe. However, it does appear to present some health risks. The most significant of these comes from the fact that it may work! Combining bitter melon with standard drugs may reduce blood sugar too well, possibly leading to dangerously low blood sugar levels. 7 In fact, there are case reports of two children with diabetes who went into hypoglycemic coma after taking bitter melon. 8 For this reason, if you already take drugs for diabetes, you should add bitter melon to your diet only with a physician's supervision. (And definitely don't stop your medication and substitute bitter melon instead. It is not as powerful as insulin or other conventional treatments.)

Other possible risks include impaired...