Dec 14, 2014
The BMC Medicine study found that the samples of St. John's Wort that they studied not only failed to contain the crucial ingredient, it was bolstered with Alexandrian senna, which is a powerful laxative.
Before taking supplements, which are regulated much more leniently than regular drugs, check to confirm they contain what they say, said Roxanne Sukol, MD, medical director of Cleveland Clinic's Wellness Enterprise. Dr. Sukol recommends consumerlabs.com, which is the source she uses to double-check supplements. Furthermore, "if something unexpected happens, don't just keep doing what you're doing," Sukol said, particularly if you just added a supplement to your diet.
Bitter melon has been called "vegetable insulin," the supplements created by the fruit don't live up to the hype. While some people think it lowers blood sugar, it's been proven to be ineffective for managing Type II Diabetes. Additionally, taking the supplement can cause spontaneous abortion, and less serious consequences include headaches of intestinal issues.
Gingko Biloba, The BMC Medicine study found that versions of the supplement contained black walnuts, without warning that it contained nut products. studies found that taking the herb correlated with increased risk of liver and thyroid cancer in mice, and they pulled it from their recommended supplements. A clinical trial called the Gingko Evaluation of Memory study investigated 3,000 people taking the supplement and found it did not slow cognitive decline, and the National Institutes of Health has also declared it likely ineffective for treating heart disease.
Ginkgo biloba was found to cause liver and thyroid cancer in mice and rats in a study conducted by researchers at the U.S. government's National Toxicology Program (NTP). The scientists administered doses of ginkgo biloba extract five times a week over two years to both male and female rats. "We conclude that Ginkgo biloba extract caused cancers of the thyroid gland in male and female rats and male mice and cancers of the liver in male and female mice," the study stated. http://www.cspinet.org/new/201304181.html
While some people think that taking supplements containing this algae species may combat high blood pressure and thyroid disorders while also preventing cancer, there's little evidence to support these theories. Instead, because the supplement contains arsenic and cadmium, taking too much of it can be problematic, even worsening the thyroid disorder you may be trying to treat. Kelp has a lot of iodine, but anyone who eats iodized salt is fine in that department. This is one to skip — particularly for young women, as it may impair fertility and prolong the menstrual cycle.