Supplement Quality and Concerns
Fish oil is now one of the most popular dietary supplements on the market, with sales reaching $976 million in 2009. However, neither the FDA nor any other federal or state agency routinely tests fish or marine oil supplements for quality prior to sale. Problems of quality have been identified in periodic tests by independent researchers of marketed supplements containing fish oil and other marine oils. These problems include contamination, inaccurate listing of EPA and DHA levels, spoilage and formulation issues.
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—Friedrich Nietzsche (1844–1900)
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—Henry David Thoreau (1817–1862)