These companies brought in lobbyists to push legislation that would codify the benefits of fish oil into federal product labeling guidance. Those efforts proved so successful that by 2004, the FDA allowed dietary fish oil supplement labels to state that the capsules may reduce coronary heart disease risk.

The government’s optimism remained guarded, however; the FDA stated that the research was “not conclusive.”
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It's all political gimmicks sir. I hope the above answers your question.

Thanks for visiting by the way.